Korlash, Heir to Blackblade [Future Sight Promos] XY150a you can reveal 1 Fusion

you can reveal 1 Fusion Monster from your Fusion Deck and send 1 of the Fusion Material Monsters listed on that card from your Deck to the Graveyard

Memnarch understands

The player whose monster remains alone on the field at the End Phase of this turn wins the Duel

during damage calculation: This card gains ATK equal to the current ATK of the opponent's monster it is battling during that damage calculation only

Set: Portal Type: Sorcery Rarity: Rare Cost: {1}{G} You may play up to three additional lands this turn

Korlash, Heir to Blackblade [Future Sight Promos] XY150a you can reveal 1 FusionSet: Future Sight Promos Type: Legendary Creature Zombie Warrior Rarity: Rare Cost: {2}{B}{B} Korlash, Heir to Blackblade's power and toughness are each equal to the number of Swamps you control. {1}{B}: Regenerate Korlash. Grandeur Discard another card named Korlash, Heir to Blackblade: Search your library for up to two Swamp cards, put them onto the battlefield tapped, then shuffle.