Hearthstone 23: The Evil League of EVIL

[The Glyphstone]

Doesn't remove the OTK though. Reckless experimenter will still let it be cast infinitely on a mech.

RE reduces by 3 IIRC, so that means even the echos will cost 1 Mana. It also slows it down, since RE itself is Turn 5. So instead of T4 mech, T5 OTK, you have to get a mech and RE to both stick for at least a turn before you can drop a giant stack of Magnetics.

EDIT: I think removing the Deathrattle is more elegant though, I agree.