Azor, the Lawbringer (RIX 154)

Legendary Creature — Sphinx • Mana cost: {2}{W}{W}{U}{U} • Rivals of Ixalan • Mythic

Flying
When Azor enters, each opponent can't cast instant or sorcery spells during that player's next turn.
Whenever Azor attacks, you may pay {X}{W}{U}{U}. If you do, you gain X life and draw X cards.

Illustrated by Ryan Pancoast.