Excise the Imperfect

Flying, First Strike, Hexproof, Trample, Haste... When this Creature Attacks {b}: Destroy all Artifacts, Up to 1 Land on the Playing Field, and Creatures with Power less than this Card's Power... {t}: Exile all Creatures on your Opponent's Field with Toughness less than this Card's Power, then Gain 2 Life for Each of those Creatures, but Other Creatures you Control cannot Attack this Turn...