Rishkar's Expertise
Also known as
Sorcery
"Control the Great Conduit? You might as well try to divert a river with your hands."
Rulings (10)
The mana value of a split card is determined by the combined mana cost of its two halves. If an expertise spell allows you to cast a split card, you may cast either half or, if that split card has fuse, both halves.
The greatest power among creatures you control is determined as Rishkar's Expertise resolves.
While you're casting your free spell, the Expertise spell is still on the stack. It will be put into its owner's graveyard after the free spell is cast. The free spell can't target the Expertise card in your graveyard. It can target the Expertise spell on the stack, but the Expertise spell will become an illegal target before the free spell resolves.
Legality
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