Sylas, the Unshackled

Menace
Magecraft—Whenever you cast or copy an
instant or sorcery spell, Sylas, the Unshackled
gets +1/+1 until end of turn.
Whenever an opponent casts an instant or sorcery spell, you may pay {4}. If you do, copy that spell.
You choose new targets for that copy.
"The great mage rebellion starts now!"