Crimson Manticore

Flying
, : Crimson Manticore deals 1 damage to target attacking or blocking creature.

Osai Vultures

Flying
At the beginning of each end step, if a creature died this turn, put a carrion counter on Osai Vultures.
Remove two carrion counters from Osai Vultures: Osai Vultures gets +1/+1 until end of turn.

Vampire Bats

Flying (This creature can’t be blocked except by creatures with flying or reach.)
: Vampire Bats gets +1/+0 until end of turn. Activate this ability no more than twice each turn.

Dancing Scimitar

Flying (This creature can’t be blocked except by creatures with flying or reach.)

Wall of Air

Defender, flying (This creature can’t attack, and it can block creatures with flying.)

Mahamoti Djinn

Flying (This creature can’t be blocked except by creatures with flying or reach.)

Nightmare

Flying (This creature can’t be blocked except by creatures with flying or reach.)
Nightmare’s power and toughness are each equal to the number of Swamps you control.

Shivan Dragon

Flying (This creature can’t be blocked except by creatures with flying or reach.)
: Shivan Dragon gets +1/+0 until end of turn.

Cockatrice

Flying
Whenever Cockatrice blocks or becomes blocked by a non-Wall creature, destroy that creature at end of combat.

Lord of the Pit

Flying, trample
At the beginning of your upkeep, sacrifice a creature other than Lord of the Pit. If you can’t, Lord of the Pit deals 7 damage to you.

Sengir Vampire

Flying (This creature can’t be blocked except by creatures with flying or reach.)
Whenever a creature dealt damage by Sengir Vampire this turn dies, put a +1/+1 counter on Sengir Vampire.