Courier's Briefcase

Whenever this creature attacks, defending player exiles two permanents they control.

Flying

Your opponents can't cast spells with even mana values. (Zero is even.) Your opponents can't block with creatures with even mana values.

Flying Lifelink (Damage dealt by this creature also causes you to gain that much life.) Whenever you gain life, put a +1/+1 counter on each creature you control.

Flying When this creature enters, you gain 2 life for each Gate you control.

Flying

Target creature gets +2/+2 until end of turn. Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Bestow 5WW (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.) Flying, first strike Enchanted creature gets +4/+4 and has flying and first strike.