Legendary Creature - Human Wizard Phyrexian Countermagic (CTRL to add secondary) Creatures Matter Najeela, the Blade-Blossom Whenever a Warrior attacks, you may have its controller create a 1/1 white Warrior creature token that's tapped and attacking
Cait, Cage Brawler A mostly indestructible commander that grows provides lots of interesting Voltron potential
Merfolk players will be able to add blue Cavern of Souls to represent their favorite tribe in Modern, Krark, the Thumbless decks can feature a red Mana Crypt to forecast the impending doom in Commander, and the most inspired collectors can enjoy a display of the full rainbow in their home office, including one of the special three-color neon ink variants
Since Commander is home to a lot of mana rocks and many other utility artifacts, opponents will often control a ton of artifacts they can't get rid of
obviously, chaos ensues when the chaos symbol is rolled on the planar die