Waste Not [Commander 2016] Commander's Arsenal you may pay 4 life

you may pay 4 life rather than pay this spell's mana cost

From the Sardian mountains wakes ancient doom: Warrior born from a rocky womb

Set: Fifth Dawn Type: Artifact — Equipment Rarity: Uncommon Cost: {0} Equipped creature has "{T}: Add one mana of any color

Set: San Diego Comic-Con 2015 Type: Legendary Creature — Human Soldier Rarity: Mythic Cost: {W} At end of combat

Waste Not [Commander 2016] Commander's Arsenal you may pay 4 lifeSet: Commander 2016 Type: Enchantment Rarity: Rare Cost: {1}{B} Whenever an opponent discards a creature card, create a 2 2 black Zombie creature token. Whenever an opponent discards a land card, add {B}{B}. Whenever an opponent discards a noncreature, nonland card, draw a card.