Ulamog, the Infinite Gyre [From the Vault: Legends] Weatherlight Set: Shards of Alara Type:

Set: Shards of Alara Type: Instant Rarity: Rare Cost: {3}{B}{B} Reveal the top card of your library and put that card into your hand

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you

Whereas Mishra works in metals and stone

it gets -4/+4 until end of turn

Ulamog, the Infinite Gyre [From the Vault: Legends] Weatherlight Set: Shards of Alara Type:Set: From the Vault: Legends Type: Legendary Creature Eldrazi Rarity: Mythic Cost: {11} When you cast this spell, destroy target permanent. Indestructible Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.) When Ulamog, the Infinite Gyre is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.