Propulsion Overdrive

Choose an opponent. You and that player each
draw a card. Then, reveal any number of instant
and/or sorcery cards. That player may choose a
card from among them. Discard that card. Until
end of turn, for each spell you cast from among
the revealed cards from anywhere, you may cast
a copy of them without paying their mana cost.
You may choose new targets for the copy.
Until end of turn, players have: "Discard a card:
change the target of target instant or sorcery spell
with a single target.