Sonic Screwdriver (0186) [Doctor Who] Lord Set: Zendikar Type: Creature —

Set: Zendikar Type: Creature — Goblin Berserker Rarity: Mythic Cost: {R}{R} Double strike

Whenever Hellkite Tyrant deals combat damage to a player

Set: Unlimited Edition Type: Artifact Rarity: Rare Cost: {3} {3}

Heir of the Ancients deals damage to target creature or planeswalker equal to twice the number of Equipment you control

but how could that be

Sonic Screwdriver (0186) [Doctor Who] Lord Set: Zendikar Type: Creature —Set: Doctor Who Type: Artifact Rarity: Uncommon Cost: {3} {T}: Add one mana of any color. {1}, {T}: Untap another target artifact. {2}, {T}: Scry 1. (Look at the top card of your library. You may put that card on the bottom.) {3}, {T}: Target creature can't be blocked this turn.