If you sacrifice an Island this way
if creatures you control have total power 8 or greater
Set: Commander 2016 Type: Legendary Creature — Merfolk Wizard Rarity: Rare Cost: {G}{U} {4}: Scry 1
{U}: Enchanted creature gains shroud until end of turn
Set: Classic Sixth Edition Type: Instant Rarity: Uncommon Cost: {3}{R} Destroy all Islands
Gisela, the Broken Blade [From the Vault: Transform] Shadows over Innistrad If you sacrifice an IslandSet: From the Vault: Transform Type: Legendary Creature Angel Horror Rarity: Mythic Cost: {2}{W}{W} Flying, first strike, lifelink At the beginning of your end step, if you both own and control Gisela, the Broken Blade and a creature named Bruna, the Fading Light, exile them, then meld them into Brisela, Voice of Nightmares. She now hears only Emrakul's murmurs.