Hammer of Nazahn [Commander 2017] XY194 you gain life equal to

you gain life equal to that creature's toughness

It's a matter of strength

Set: EX: Unseen Forces Type: Darkness Rarity: Secret Rare Retreat cost: Colorless

When Karmic Guide enters the battlefield

exchange control of Gilded Drake and up to one target creature an opponent controls

Hammer of Nazahn [Commander 2017] XY194 you gain life equal toSet: Commander 2017 Type: Legendary Artifact Equipment Rarity: Rare Cost: {4} Whenever Hammer of Nazahn or another Equipment enters the battlefield under your control, you may attach that Equipment to target creature you control. Equipped creature gets +2 +0 and has indestructible. Equip {4}