Mazirek, Kraul Death Priest [Commander 2015] Urza's Destiny you may add an amount

you may add an amount of {C} equal to the number of creatures you control that share a creature type with it

Set: Unlimited Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {R} Enchant creature

Lifelink (Damage dealt by this creature also causes you to gain that much life

−7: Exile the top ten cards of your library

Set: Kaladesh Prerelease Promos Type: Creature — Dwarf Artificer Rarity: Rare Cost: {2}{W} Servos and Thopters you control get +1/+1

Mazirek, Kraul Death Priest [Commander 2015] Urza's Destiny you may add an amountSet: Commander 2015 Type: Legendary Creature Insect Shaman Rarity: Mythic Cost: {3}{B}{G} Flying Whenever a player sacrifices another permanent, put a +1 +1 counter on each creature you control. The clicks and buzz of the undercity proclaim him the incarnation of decay.