Body Thief — When you cast this spell, you may exile a creature you control and put a takeover counter on it. You may have The Master enter as a copy of a creature card in exile with a takeover counter on it.

Menace Whenever Satoru and/or one or more other nontoken creatures you control enter, if none of them were cast or no mana was spent to cast them, draw a card.

Companion — Your starting deck contains only cards with even mana values. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} as a sorcery.) When Gyruda enters, each player mills four cards. Put a creature card with an even mana value from among the milled cards onto the battlefield under your control.

Vigilance (Attacking doesn't cause this creature to tap.) When Sephiroth enters, creatures your opponents control get -2/-2 until end of turn. Whenever a creature an opponent controls dies, put a +1/+1 counter on Sephiroth.

When The Cyber-Controller enters, each opponent mills X cards. Put all creature cards milled this way onto the battlefield face down under your control. They're 2/2 Cyberman artifact creatures. Other artifact creatures you control get +1/+1.