Singles

Mistform Ultimus is every creature type (even if this card isn't on the battlefield).

All Slivers have "{1}: This permanent becomes the creature type of your choice in addition to its other types until end of turn."

Flying {1}: Mistform Seaswift becomes the creature type of your choice until end of turn. Morph {1}{U} (You may cast this card face down as a 2/2 c...

When Merchant of Secrets enters the battlefield, draw a card.

Morph {2}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Master of the Veil is ...

Flying {T}, Tap two untapped Birds you control: Return target permanent to its owner's hand.

Flying Cycling {2} ({2}, Discard this card: Draw a card.)

Cycling {B}{B} ({B}{B}, Discard this card: Draw a card.) When you cycle Gempalm Polluter, you may have target player lose life equal to the number ...

Whenever a Sliver deals combat damage to a player, its controller may draw a card.

{7}{U}: Glintwing Invoker gets +3/+3 and gains flying until end of turn.

Amplify 1 (As this creature enters the battlefield, put a +1/+1 counter on it for each Bird and/or Soldier card you reveal in your hand.) Flying

Cycling {2}{U} ({2}{U}, Discard this card: Draw a card.) When you cycle Gempalm Sorcerer, Wizard creatures gain flying until end of turn.

Morph {2}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Echo Tracer is turned...

At the beginning of each player's upkeep, that player mills X cards, where X is the number of cards in their hand.

Flying Morph {2}{U}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Dermoplasm...

Flying Tap two untapped Birds you control: Draw a card. Tap two untapped Wizards you control: Target creature gains flying until end of turn.

Covert Operative can't be blocked.

Morph {4}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Chromeshell Crab is tu...

Cephalid Pathmage can't be blocked. {T}, Sacrifice Cephalid Pathmage: Target creature can't be blocked this turn.

Flying

Flying {T}: Prevent the next 2 damage that would be dealt to any target this turn.

Flying Morph {2}{W} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Wingbeat Warrio...

Flying Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.