Originally Posted by
Zombie
There's important differences, though. Most importantly that this maindeckable, which Canonist isn't. We can also slowly dig for outs to Canonist or the NO's that win the match - 2 cards/turn is still way better than 1. Against this, no dice.
The effect is also far more severe on non-Storm/Elves combo decks - Canonist merely forces Omnitell to go off in slow motion, this just shuts it down hard, comboing out, setting up, the whole thing. This shuts down Griselbrand. It shuts down most cantrips, so Storm has a hard time setting up. Tempo with a low-threat hand? Oops, good game loss there. The big thing about it is that it hurts every deck's ability to play smoothly because they're playing blanks and has actual, good effect on fair decks. The second is that it's an enchantment and isn't hit by the standard maindeck hate card which is just functionally the best thing we have.
Hating it after board is pretty easy. But it's the maindeckability of it that is the big issue. We have less NO's, more Glimpses and no Progenitus in G1 too.