The Aetherspark [Aetherdrift Prerelease Promos]

Set: Aetherdrift Prerelease Promos Type: Legendary Artifact Planeswalker — Equipment Rarity: Mythic Cost: {4} As long as The Aetherspark is attached to a creature, The Aetherspark can't be attacked and has "Whenever equipped creature deals combat damage during your turn, put that many loyalty counters on The Aetherspark."[+1]: Attach The Aetherspark to up to one target creature you control. Put a +1/+1 counter on that creature.[-5]: Draw two cards.[-10]: Add ten mana of any one color.