Within the game, there are several effects and skills a certain monster can use or dished out by a card. Such effects can turn the tide of battle.

'The best way to make use of them or fight them, is to know them. Fear them. But by all means know them. A deck without a card that has a effect isn't a big threat to most players. And who doesn't want to do double the attack damage?'

Skill/Effect	Creature	Card	Content
Ablaze	Graviton Fire Eater, Fire Spirit		Creature gains +2/+0
Adrenaline	Green Nymph	Adrenaline	Target monster gains extra attacks depending on it's attack power; 3 or less attack power gains the most attacks. (most efficient on a creature with attack power of 3, which gains 3 x 4 = 12 dmg.) Effects such as poison, freeze, and time pause also speeds up.
Aflatoxin	Grey Nymph	Aflatoxin	Gives 2 poison counters and when the target dies it turns into a malignant cell (cell multiplies each turn before the end of turn and applies damages)
Antimatter	Purple Nymph	Antimatter	Invert the attack power of the target.
Basilisk blood		Basilisk Blood	Provides +0/+20 to target creature while disabling it for 6 turns
Bioluminescence	Firefly		Each turn is generated.
Black hole		Black Hole	Absorbs 3 quanta for each element from enemy's possession. Gains 1 HP per absorbed quantum (max 36).
Blessing		Blessing	Adds +3/+3 to the target creature.
Boneyard		Boneyard	Generates bones when a creature is killed.
Bone wall		Bone Wall	Creates 7 shields absorbing altogether 7 attacks, adds 2 shields when a creature is killed
Burrow	Antlion, Shrieker, Devourer		Creature can not be targeted. Damage reduced by half. (Currently seems not affected by Flood)
Butterfly effect		Butterfly Effect	Change the skill of the target into "Destroy"
Congeal			Freezes the target for 4 turns.
Chaos seed		Chaos Seed	Exerts a random effect.
Deflagration		Deflagration	Destroys the permanent structure.
Deja vu	Deja Vu		Creates a copy of the creature. If target creature is a mutant, the resultant creature will be treated as a newly-spawned mutant with the same creature base. Single use.
Destroy		Destroy	Destroys the target permanently.
Devour	Otyugh, Scarab		Swallows the targeted monster (must have less health); creature gains +1/+1.
Devourer	Devourer		Absorbs any one quantum from enemy and returns the dark quantum.
Dive	Pegasus, Wyrm		The attack of target monster is doubled for next attack.
Drain life		Drain Life	Drains 2hp for every 10 darkness quanta on hand.
Earthquake		Earthquake	Destroys a maximum of 3 pillars of the same element.
Empathic bond		Empathic Bond	Heals 1 hp for each creature on hand.
Enchant artifact		Enchant Artifact	Protects the permanent structure from any skills.
Endow	Crusader		Gains the target weapon's ability and +X/+2, where X is weapon's attack.
Evolve	Graboid		Turns Graboid into burrowed Shrieker
Fire bolt		Fire Bolt	Damages the target 3hp for every 10 fire quanta on hand. (<10 quanta damages 3hp)
Firefly	Firefly Queen		Spawns a Firefly - available only as Firefly Queen
Flooding		Flooding	Destroys non-neutral/water type creature in the top and bottom row of the creature area. Upkeep 1 per turn.
Flying weapon		Flying Weapon	Turns the weapon into a creature.
'Fractal		Fractal	Fill users' hands with the target creature, consuming all aether quanta on hand.
Freeze		Freeze	Freezes the target for 3 turns. (Can be targeted by effects while frozen)
Gravity Pull	Armagio	Gravity Pull	Target creature will take damage in place of the player. This does not affect direct damage spells, such as Lightning, that target the player.
Growth	Forest Spirit, Lava Golem		Creature gains +2/+2.
Guard	Iridium Warden		Delays the target creature for 1 turn (cumulative) and deals damage equal to guarding creature's attack unless target creature is airborne.
Hasten		Sundial	Draws a card.
Hatch	Fate Egg		Turn into a random creature. Single use.
Heal		Heal	Heals target creature for 20hp.
Healing			Heals target creature up to 5hp.
Holy light		Holy Light	Heals target or target creature for 10hp.
Hope		Hope	Heals the user for the number of light-emitting creatures
Ice bolt		Ice Bolt	Damages the target 2hp for every 10 water quanta on hand. (<10 quanta damages 2hp)
Ignite		Unstable Gas	Damages the enemy for 20hp whilst harming all creatures 1 hp.
Immaterial	Immortal, Phase Dragon		The creature cannot be targeted.
Immolation		Immolation	Sacrifices a creature for 6 fire quanta and every element 1 quanta
Immortality	Anubis	Quintessence	The target is cannot be targeted and is not affected by area spells (such as plague). Creature still can be killed by enemy's shield.
Improved Mutate			Improved Mutate will always turn target into a mutant.
Infect		Virus	Adds a poison counter on the target creature. (Cumulative)
Infection	Parasite		Adds a 1hp poison damage on the target creature. (Cumulative)
Inflate	Toadfish		Inflicts 1 poison damage, poisons if swallowed.
Liquid Shadow		Liquid Shadow	Target creature gets a poison counter, becomes a vampire. This will replace any ability the creature may have already had.
Lightning		Lightning	Damages 5hp for the target.
Lobotomize		Lobotomizer , Electrocutor	Remove any skill from the target creature (including passive skills).
Luciferin	White Nymph	Luciferin	Grants creature without a skill the skill "Bioluminescence" and heals player for up to 10 HP.
Lycanthropy	Lycanthrope		Gives the monster +5/+5. Single use.
Momentum	Sapphire Charger	Momentum	Target gains +1/+1; attacks now ignore shields and gravity pull.
Mutation	Fallen Elf	Mutation	Mutates target creature into a mutant, abomination, or it dies. Improved Mutate will always turn target into a mutant.
Nightfall		Nightfall	All death and darkness creatures gains +1/+1.
Nova		Nova	Generates quanta, 1 for each element.
Nymph's tears	Nymph Queen	Nymph's Tears	Turns a pillar into a nymph, its element is based on that of the pillar.
Paradox	Maxwell's Demon		Destroy a creature. Target must have more attack than health.
'Parallel universe		Parallel Universe	Creates a copy of the creature
Photosynthesis	Rustler		Gains two life quanta. (Can be used multiple times in a turn)
Plague		Plague	Put a 1 poison damage on every enemy creature in play.
Poison	Chrysaora	Poison	Adds a 2 poison damage on the player directly. (Cumulative)
Precognition		Precognition	You can see your opponent's hand. Draw a card.
Psionic wave	Mind Flayer, Ulitharid		Removes target creature's skill.
Purify		Purify	Cures the user of poison and gives 1hp per turn (cumulative)
'Quintessence		Quintessence	Grants the targer creature Immortal skill.
Rage potion	Red Nymph		Gives target monster +5/-5
Rage potion uprgaded	Fire Nymph		Gives target monster +6/-6
Rain of fire		Rain of Fire	Damages 3hp for each enemy creature.
Rebirth	Ash		Return to original creature state - Phoenix/Ash(Fire) only in new 1.21 version
Reverse Time		Reverse Time	Return target creature to top of owner's deck.
Scarab			Spawns a Scarab (version 1.21) - available only as Pharaoh
Scavenger	Vulture		The creature gains +1/+1 whenever other creature dies
Shockwave		Shockwave	Damages a creature 4hp, instantly killing it if it is frozen.
Spark		Spark	Damages the opponent for 3hp,
Stasis		Sundial	Prevents all enemy creatures from attack
Steal		Steal	Get a copy of target permanent, target permanent is destroyed.
Stone skin		Stone Skin	Adds a maximum of 50 hitpoints for each earth quanta on hand.
Stone form	Gargoyle		Adds +0/+20 to itself.
Swarm	Scarab		Gives the scarab hitpoints by counting the number of scarabs
Thunderstorm		Thunderstorm	Damages all the enemy creature for 1hp.
Vampire	Minor Vampire		The damage dealt is returned to you as healing.