Rivalry (3)
Target creature you control and up to one other target legendary creature you control each deal damage equal to their power to target creature you don't control.
At the beginning of each player's upkeep, if that player controls more lands than each other player, Rivalry deals 2 damage to them.
Gain control of target artifact or creature until end of turn. Untap it. It gains haste until end of turn. Create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell.")
Gatherer works better in the Companion app!