Riku of Two Reflections [Judge Gift Cards 2014] Commander Anthology Volume II Nightmare's power and toughness are

Nightmare's power and toughness are each equal to the number of Swamps you control

Three kings no more—Chenliu

Whenever Thada Adel

destroy target nonartifact creature that player controls of their choice

Riku of Two Reflections [Judge Gift Cards 2014] Commander Anthology Volume II Nightmare's power and toughness areSet: Judge Gift Cards 2014 Type: Legendary Creature Human Wizard Rarity: Mythic Cost: {2}{G}{U}{R} Whenever you cast an instant or sorcery spell, you may pay {U}{R}. If you do, copy that spell. You may choose new targets for the copy. Whenever another nontoken creature enters the battlefield under your control, you may pay {G}{U}. If you do, create a token that's a copy of that creature.