Jirachi, Wish Maker

{3} Wish - Roll a d20. The outcomes are:
1-4: Take 5 damage. Your creatures take 2 damage.
5-10: Draw a card.
11-15: You have 3 mana available in any color combination.
16-19: All your creatures gain +2/+2 and
First strike until end of turn. Draw a card.
20: Destroy all opposing creatures no matter their effect.
If there are none, remove 2 creatures from your
exile and put them back on the battlefield.