$3.57
Rishkar's Expertise 
Sorcery
Aether Revolt Rare
Draw cards equal to the greatest power among creatures you control.
You may cast a spell with mana value 5 or less from your hand without paying its mana cost.
You may cast a spell with mana value 5 or less from your hand without paying its mana cost.
"Control the Great Conduit? You might as well try to divert a river with your hands."
#123 — Illus. Magali Villeneuve