Dakkon, the Ascended

+2: Put two 2/2 Knight creature tokens onto the battlefield under your control. They gain haste until end of turn.
-4: Destroy all creatures power 5 or greater. Creatures you control get +1/+1 for each creature destroyed this way until end of turn.
-15: Each player chooses 4 permanents they control and puts a safety counter on them. Destroy all permanents without a safety counter.