polymerization yugioh card RA03-EN051 Alt Art (Elemental HERO Artwork) : Quarter Century Secret Rare 1st Edition using 2 monsters you control as Fusion Materials Polymerization [DPYG-EN020] Super Rare

Note that she can ultimate the turn after arriving if you +2 her on the first turn, so you can get that emblem quickly

Youd like to play this red enchantment with commanders that have a built-in mana sink, or commanders that use the mana to create more creatures, creating an infinite combo (Sliver Queen, for example)

Quantum Riddler is a space Sphinx that can draw you cards, and potentially draw you a lot of cards if you're playing them quickly

Monster Manual The tools to cheat giant monsters onto the battlefield in Cube probably peaked with Reanimate and Sneak Attack, but Monster Manual manages to be compelling even in a world where those cards exist