WOW! Is that a 5344/5 elite wyrm?!?
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Purple Nymphs ftw! And yeah, this idea has been known for a looooooooong time. Took me a loooooooong time to get the screenshot, too. (after many failures due to misclicks)
How did you get the Elite Wyrm to 5344/5? thats what i want to know 
Buff buff buff using Blessings + Chaos Power + Rage Potions, then Antimatter. (so enemy won't die
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) Get hand full of buff cards, then Antimatter, buff-spree again, then Antimatter. Once I've drawn most of my cards, I dive the largest Antimattered Elite Wyrm, TU. On next turn, I rewind the Elite Wyrm that dove last turn (since dive reverts your Wyrm to positive attack, and I didn't want to waste my precious
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), dive the new largest Antimattered Elite Wyrm, TU. Rinse and Repeat until I use all my TU's, then I Antimattered on the -2672/5, dove it, and now it's 5344/5. Screenshot time!
I'm sure someone can make a larger Elite Wyrm, but I'll go insane if I try any harder (for today). I thought it was obvious, though, with the Purple Nymphs on my field.