If a creature connives X, its controller will draw X cards, discard X cards, then then put a number of +1/+1 counters on the conniving permanent equal to the number of nonland cards discarded this way
If you can somehow manage to return the battle to the field and repeat the process, you're in for serious card advantage
This means you're free to go all-out on your turn, attack and tap every creature and bit of land you have, safe in the knowledge a few minutes later you'll reset and have all those resources available for casting instants and blocking
Answering that will depend on your playgroup, but if your friends are packing a lot of board clears and enchantment hate , the answer should be yes
Table of Contents A huge Secret Lair leak for the upcoming Magic: The Gathering Universes Beyond product, a collaboration with the Marvel world, has been released to the public