Psionic Ritual

Casualty 3 (As you cast this spell, you may sacrifice a creature with power 3 or greater. When you do, copy this spell and you may choose a new target for the copy.)

Exile target instant or sorcery card from an opponent's graveyard. Copy that card. You may cast the copy without paying its mana cost.

Exile target instant or sorcery card from your graveyard and target instant or sorcery card from an opponent's graveyard. Copy those cards. Cast the copies if able without paying their mana costs. Exile Spelltwine.

Look at target opponent's sideboard. You may cast a card from that sideboard without paying its mana cost.

Exile Command the Chaff.

Prowl (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Rogue.)

Search target opponent's library for an instant or sorcery card. You may cast that card without paying its mana cost. Then that player shuffles.

Roll two d8 and choose one result. Draw cards equal to that result. Then you may cast an instant or sorcery spell with mana value less than or equal to the other result from your hand without paying its mana cost.

: Exile target instant or sorcery card from a graveyard. Roll a d20. Activate only as a sorcery.

1—9 | Copy that card. You may cast the copy.

10—19 | Copy that card. You may cast the copy by paying rather than paying its mana cost.

20 | Copy each card exiled with this artifact. You may cast any number of the copies without paying their mana costs.