Sandwurm Convergence [Amonkhet] SPA Circu lobotomista dimir you may reveal a Merfolk

you may reveal a Merfolk card from your hand

Set: Onslaught Type: Instant Uncommon Cost: {2}{U} Counter target spell unless its controller pays {3}

Each foe sacrifices an artifact or enchantment they control

Set: Odyssey Type: Sorcery Uncommon Cost: {2}{U} Target player reveals the top four cards of their library

After the destruction of Argoth

Sandwurm Convergence [Amonkhet] SPA Circu lobotomista dimir you may reveal a MerfolkSet: Amonkhet Type: Enchantment Rare Cost: {6}{G}{G} Creatures with flying can't attack you or planeswalkers you control. At the beginning of your end step, create a 5 5 green Wurm creature token. Cantankerous and territorial, sandwurms claim even the skies above their dunes.