Once your opponents move to destroy him, he flips over to Edgar Markov's Coffin, an artifact that gains a counter at the start of your turn and then makes you a 1/1 Vampire token with lifelink
As such, you almost always want four copies of your combo pieces in your main deck (to maximize your chances of drawing them) and then typically some cantrips, card draw, and filtering to find the pieces that you need
When you want to take out a chunk of your opponents HP, use Freeze Shock to deal 150 damage
You can even move Shielded by Faith from another creature to Zur when it enters the battlefield
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Even today, Wrath of God is the standard staple by which modern sweepers are compared