Herd Heirloom TDM/144

Set: Tarkir: Dragonstorm
Collector Code: TDM/144
Name: Herd Heirloom
Type: Artifact
Oracle text: {T}: Add one mana of any color. Spend this mana only to cast a creature spell. {T}: Until end of turn, target creature you control with power 4 or greater gains trample and "Whenever this creature deals combat damage to a player, draw a card."
Rarity: Rare