Mat, Royal Gambler

Risky Gamble — Whenever this creature attacks,
you may flip a coin. If you win the flip, attacking
creatures you control get +1/+1 and have
"Whenever this creature deal combat damage to
a player, you may draw a card. If you do, discard
a card" until end of turn.
Whenever you flip a coin and lose, you may pay
{2} for each coin you've flipped this turn. If you
do, re-flip the coin.