Attacking creatures with flying get -2/-2 and lose flying until end of turn.

Untap target creature. It gets +3/+3 until end of turn.

Until end of turn, target artifact or creature becomes a 4/4 Angel artifact creature and gains flying.

Draw a card.

Target creature loses flying until end of turn.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Until end of turn, target creature loses all abilities and becomes a blue Frog with base power and toughness 1/1.

Target creature gets +2/+2 until end of turn. If it's paired with a creature, that creature also gets +2/+2 until end of turn.

Target creature becomes green and gets +1/+0 until end of turn.

Draw a card.

Target creature becomes blue until end of turn. Untap that creature.

Draw a card.

Until end of turn, target creature gets +1/+3 and gains flying and toxic 1. (Players dealt combat damage by that creature also get a poison counter.)

Target creature gains flying until end of turn.

Draw a card.

Target creature and all other creatures with the same name as that creature get +2/+2 until end of turn.

Target creature gets +1/+1 and gains flying and first strike until end of turn.

: Target land you control becomes an X/X Elemental creature until end of turn, where X is the number of Allies you control. It's still a land.

Target creature gets +2/+2 until end of turn. If it's an Ally, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Until end of turn, target creature you control becomes a blue Dragon Illusion with base power and toughness 4/4, loses all abilities, and gains flying.

Until end of turn, target creature loses all abilities and becomes a green Snake with base power and toughness 1/1.

Draw a card.

Untap target creature. It gets +2/+2 and gains reach until end of turn.

Untap target creature. It gets +1/+4 and gains reach until end of turn.