Izzet Boilerworks [Guilds of Ravnica Guild Kit] Troll whenever either of those creatures

whenever either of those creatures deals combat damage

Return those cards to the battlefield under their owner's control at the beginning of the next end step

a consummate blend of aristocrat and predator

until your next turn

Set: Modern Horizons Type: Legendary Planeswalker — Serra Rarity: Mythic Cost: {2}{W}{W} +2: Creatures you control with flying get +1/+1 until end of turn

Izzet Boilerworks [Guilds of Ravnica Guild Kit] Troll whenever either of those creaturesSet: Guilds of Ravnica Guild Kit Type: Land Rarity: Common Izzet Boilerworks enters the battlefield tapped. When Izzet Boilerworks enters the battlefield, return a land you control to its owner's hand. {T}: Add {U}{R}.