When a necromancer gets down these two cards, giving everything finite life, and removing one life a turn from every living creature on the board, it's pretty much game over unless they are dealt with quick... Added to the general high bang for the buck of undead/finite life creatures, it's a nasty combo, giving the necro a huge advantage for very little cost.
Short of building up a wrecking team to take down these conjurations, what's the strategy against it? It's so dispiriting to play against.
Does any other mage have anything quite as dominant, which allows it to wreak so much havoc for so little effort?