Kicker (You may pay an additional as you cast this spell.)
When Excavation Elephant enters the battlefield, if it was kicked, return target artifact card from your graveyard to your hand.

Flame Lash deals 4 damage to any target.

Flame Sweep deals 2 damage to each creature except for creatures you control with flying.

Whenever Flamerush Rider attacks, create a token that's a copy of another target attacking creature and that's tapped and attacking. Exile the token at end of combat.
Dash (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

As long as it's your turn, Gideon Blackblade is a 4/4 Human Soldier creature with indestructible that's still a planeswalker.
Prevent all damage that would be dealt to Gideon Blackblade during your turn.
[+1]: Up to one other target creature you control gains your choice of vigilance, lifelink, or indestructible until end of turn.
[−6]: Exile target nonland permanent.

Menace (This creature can't be blocked except by two or more creatures.)
When Gilt-Leaf Winnower enters the battlefield, you may destroy target non-Elf creature whose power and toughness aren't equal.

Pay 2 life: Glorifier of Dusk gains flying until end of turn.
Pay 2 life: Glorifier of Dusk gains vigilance until end of turn.

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
: Goblin Banneret gets +2/+0 until end of turn.

At the beginning of your upkeep, sacrifice Goblin Boom Keg.
When Goblin Boom Keg is put into a graveyard from the battlefield, it deals 3 damage to any target.

Whenever Hardened Berserker attacks, the next spell you cast this turn costs less to cast.

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Flash
Lifelink
When Heron's Grace Champion enters the battlefield, other Humans you control get +1/+1 and gain lifelink until end of turn.

Imperial Lancer has double strike as long as you control a Dinosaur.

Whenever Karplusan Hound attacks, if you control a Chandra planeswalker, this creature deals 2 damage to any target.

Enchant creature
Enchanted creature gets +2/+2.
Enchanted creature has first strike as long as you control a white or black permanent.

Copy target instant or sorcery spell, then return it to its owner's hand. You may choose new targets for the copy.

Whenever you gain life, Nirkana Assassin gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

Put a +1/+1 counter on target creature you control, then it fights target creature you don't control. (Each deals damage equal to its power to the other.)
Adamant — If at least three green mana was spent to cast this spell, the creature you control gains indestructible until end of turn.

At the beginning of your upkeep, you lose 2 life.
Dash (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

, , Sacrifice another creature: Manifest the top card of your library. (Put that card onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)