THIS DECK IS MEANT TO BE UPGRADED. It would be much slower and less powerful with unupped serendipity and novas. Combining the power of Supernovas and the quick 3 card gain of Serendipity, this deck averages a win in 6 or 7 turns(which is faster than I've seen with most other rush decks). I won 24 PVP2 games last night alone, and lost 2 or 3. This deck has the speed of most rushes but the oty and ulitharid combined with whatever other goodies shards may give you make it an extremely rewarding and ever changing strategy. The problem of course being that shards and mutations can be unreliable, but the speed of this deck usually makes up for it. I haven't tested it against fake gods or anything above silver arena, but it can dominate Lv 3, PVP2 and Bronze (and Silver a bit less consistently).
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Play any Quantum Towers and get a Super Nova in as fast as possible. DO NOT PLAY ANY SHARDS BEFORE THEN (unless you have amassed a decent amount of quanta overall). Be careful to not accidentally summon a singularity as that will almost always ruin your chances of winning. From there, all cards are relatively cheap so after a supernova, play any cards in your hand that you can, to free up space and use needed quantum. Then you may finally use a shard. Be smart with steals and either cripple your enemy early or contain them. The druid, oty, and bone yard provide a powerful combination (as can the druid and queen). Graboid provides a good bit of damage for a low cost, and the golum and queen provide some reliable growth as well. Oty and Ulitharid will provide good creature control as well. The mirror shield is cheap and effective, though you'll often find other shields in the serendipity cards. As for swapping out cards, I'd keep it around 30-32 total to keep the Supernovas at the ready in your hand, and keep cards cheap so that a single supernova can put them into use. You could swap the queen and golum for cheaper cards but I think theyre worth it. Finally, it's very important to keep the cards from each element balanced well. I feel like I perfected the balance with only one or two cards from each element, but of course its a rainbow deck:its flexible. Enjoy my friends. She's treated me well.