'Milo, The Tethered

Instant and sorcery spells you cast cost {1} less
to cast.
Whenever you cast an instant or sorcery spell during your turn, flip a coin. If you lose the
flip, Ral, Monsoon Mage deals 1 damage to
you. If you win the flip, you may exile Ral.
If you do, return him to the battlefield transformed under his owner's control.