Whipkeeper [Odyssey] ST13-004 Set: Avacyn Restored Type: Enchantment

Set: Avacyn Restored Type: Enchantment Rarity: Rare Cost: {2}{G} Whenever a creature you control becomes the target of an instant or sorcery spell

If that artifact is put into a graveyard this way

Set: Collectors’ Edition Type: Enchantment — Aura Rarity: Rare Cost: {W} Enchant Wall

(You take your upkeep on their turn

Set: Doctor Who Type: Legendary Creature Rarity: Rare Cost: {2}{W} Brave Heart — Whenever you attack

Whipkeeper [Odyssey] ST13-004 Set: Avacyn Restored Type: EnchantmentSet: Odyssey Type: Creature Dwarf Rarity: Uncommon Cost: {2}{R}{R} {T}: Whipkeeper deals damage to target creature equal to the damage already dealt to it this turn. "If you don't hit your adversaries while they're down, they might get up again."