Keyword: Kicker

Kicker (You may pay an additional as you cast this spell.)
Destroy target artifact or enchantment. If this spell was kicked, draw two cards.

Kicker (You may pay an additional as you cast this spell.)
When Citanul Woodreaders enters the battlefield, if it was kicked, draw two cards.

Kicker (You may pay an additional as you cast this spell.)
This spell can’t be countered.
Urza’s Rage deals 3 damage to any target. If this spell was kicked, instead it deals 10 damage to that permanent or player and the damage can’t be prevented.

Kicker (You may pay an additional as you cast this spell.)
If Baloth Gorger was kicked, it enters the battlefield with three +1/+1 counters on it.

Kicker (You may pay an additional as you cast this spell.)
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature’s color.)
If Kavu Primarch was kicked, it enters the battlefield with four +1/+1 counters on it.

Kicker (You may pay an additional as you cast this spell.)
When Caligo Skin-Witch enters the battlefield, if it was kicked, each opponent discards two cards.

Kicker and/or (You may pay an additional and/or as you cast this spell.)
When Thornscape Battlemage enters the battlefield, if it was kicked with its kicker, it deals 2 damage to any target.
When Thornscape Battlemage enters the battlefield, if it was kicked with its kicker, destroy target artifact.

Kicker (You may pay an additional as you cast this spell.)
Untap target creature. It gets +2/+2 until end of turn. If this spell was kicked, that creature gets +4/+4 until end of turn instead.

Kicker (You may pay an additional as you cast this spell.)
Haste
When Keldon Overseer enters the battlefield, if it was kicked, gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.

Kicker (You may pay an additional as you cast this spell.)
This spell can’t be countered.
Urza’s Rage deals 3 damage to any target. If this spell was kicked, instead it deals 10 damage to that permanent or player and the damage can’t be prevented.

Kicker (You may pay an additional as you cast this spell.)
Destroy target artifact or enchantment. If this spell was kicked, draw two cards.

Kicker (You may pay an additional as you cast this spell.)
Counter target spell if its converted mana cost is 2 or less. If this spell was kicked, counter that spell if its converted mana cost is 4 or less instead.

Kicker (You may pay an additional as you cast this spell.)
Search your library for up to two Forest cards, put them onto the battlefield tapped, then shuffle your library.
If this spell was kicked, untap all Forests put onto the battlefield this way. They become 3/3 green creatures with haste that are still lands.

Kicker (You may pay an additional as you cast this spell.)
Return target nonland permanent to its owner’s hand. If this spell was kicked, draw a card.

Kicker (You may pay an additional as you cast this spell.)
Destroy target artifact or enchantment. If this spell was kicked, draw two cards.

Kicker (You may pay an additional as you cast this spell.)
Destroy target artifact or enchantment. If this spell was kicked, it deals damage equal to that permanent’s converted mana cost to target creature.

Kicker (You may pay an additional as you cast this spell.)
When Desolation Giant enters the battlefield, destroy all other creatures you control. If it was kicked, destroy all other creatures instead.

Kicker (You may pay an additional as you cast this spell.)
Breath of Darigaaz deals 1 damage to each creature without flying and each player. If this spell was kicked, it deals 4 damage to each creature without flying and each player instead.

Kicker (You may pay an additional as you cast this spell.)
Untap target creature. It gets +2/+2 until end of turn. If this spell was kicked, that creature gets +4/+4 until end of turn instead.

Kicker (You may pay an additional as you cast this spell.)
Flying
If Academy Drake was kicked, it enters the battlefield with two +1/+1 counters on it.

Kicker (You may pay an additional as you cast this spell.)
Flying
When Verix Bladewing enters the battlefield, if it was kicked, create Karox Bladewing, a legendary 4/4 red Dragon creature token with flying.

Kicker (You may pay an additional as you cast this spell.)
When Territorial Allosaurus enters the battlefield, if it was kicked, it fights another target creature.

Kicker (You may pay an additional as you cast this spell.)
Search your library for a basic land card, put it onto the battlefield, then shuffle your library. If this spell was kicked, instead search your library for two basic land cards, put them onto the battlefield, then shuffle your library.

Kicker (You may pay an additional as you cast this spell.)
Put a +1/+1 counter on each creature you control. If this spell was kicked, put two +1/+1 counters on each creature you control instead.

Kicker (You may pay an additional as you cast this spell.)
Menace
When Josu Vess, Lich Knight enters the battlefield, if it was kicked, create eight 2/2 black Zombie Knight creature tokens with menace.