Luckin the Lucky

Luckin the Lucky costs {1} less for each coin you flipped this turn.
When Luckin enters the battlefield, make a wish
for each coin you have flipped this turn, then
exile a card from your hand, you may play it
until end of turn from exile and it costs {1} less
for every coin you've flipped this turn.
Whenever Luckin attacks or blocks, return
it to its owner's hand at end of combat.