Aggravated Assault [Explorers of Ixalan] The Extreme Evolution by Tributing 1 Thunder Effect

by Tributing 1 Thunder Effect non-Fusion Monster (in which case you do not use "Polymerization")

Whenever Narset

Set: New Phyrexia Type: Legendary Creature — Phyrexian Praetor Rarity: Mythic Cost: {6}{G}{G} Trample

searing the soul of any creature attempting to pass through its terrible bursts of flame

Set: Crossroads of Chaos Card type: Normal Spell Rarity: Ultimate Rare Activate only while you control a face-up Psychic-Type monster

Aggravated Assault [Explorers of Ixalan] The Extreme Evolution by Tributing 1 Thunder EffectSet: Explorers of Ixalan Type: Enchantment Rarity: Rare Cost: {2}{R} {3}{R}{R}: Untap all creatures you control. After this main phase, there is an additional combat phase followed by an additional main phase. Activate only as a sorcery.