Karrthus, Tyrant of Jund (Oversized) [Commander's Arsenal Oversized] XY102 This card gains 1000 ATK

This card gains 1000 ATK for each Continuous Trap Card in your Graveyard

Then he saw the battlefield

Set: OTS Tournament Pack 16 Card type: Quick-Play Spell Rarity: Ultimate Rare Send any number of other cards from your hand and/or field to the GY

Set: Elemental Energy Card type: Normal Trap Rarity: Ultimate Rare If there is a face-up monster on your side of the field that includes "Elemental Hero" in its card name

They're still lands

Karrthus, Tyrant of Jund (Oversized) [Commander's Arsenal Oversized] XY102 This card gains 1000 ATKSet: Commander's Arsenal Oversized Type: Legendary Creature Dragon Rarity: Mythic Cost: {4}{B}{R}{G} Flying, haste When Karrthus, Tyrant of Jund enters the battlefield, gain control of all Dragons, then untap all Dragons. Other Dragon creatures you control have haste.