Power Surge [Beta Edition] Human Nomad Set: Exodus Type: Enchantment Rarity:

Set: Exodus Type: Enchantment Rarity: Uncommon Cost: {W} {0}: Remove target attacking creature you control from combat and untap it

Then they exile it

Set: Arabian Nights Type: Creature — Djinn Rarity: Rare Cost: {1}{U}{U} You may choose not to untap Old Man of the Sea during your untap step

Other Dragon creatures you control have haste

Set: Alpha Edition Type: Artifact Rarity: Uncommon Cost: {1} As Black Vise enters the battlefield

Power Surge [Beta Edition] Human Nomad Set: Exodus Type: Enchantment Rarity:Set: Beta Edition Type: Enchantment Rarity: Rare Cost: {R}{R} At the beginning of each player's upkeep, Power Surge deals X damage to that player, where X is the number of untapped lands they controlled at the beginning of this turn.