Urza, Lord ProtectorArtifact, instant, and sorcery spells you cast cost less to cast. : If you both own and control Urza, Lord Protector and an artifact named The Mightstone and Weakstone, exile them, then meld them into Urza, Planeswalker. Activate only as a sorcery.

Extort (Whenever you cast a spell

Flying : Return this card from your graveyard to your hand

you gain 1 life for each card in your hand

Melee (Whenever this creature attacks

−3: Target creature gets -X/-X until end of turn

For each player who chose fame

choose up to one target creature spell or planeswalker spell

{U/P}{U/P}

Your life total can't change

Exile Mnemonic Deluge

Timeless Heroes deals X damage to any target

Then they put the exiled cards on the bottom of their library in a random order