Keyword: Kicker

Kicker—Sacrifice a creature. (You may sacrifice a creature in addition to any other costs as you cast this spell.)
Search your library for a basic land card, put that card onto the battlefield, then shuffle your library. If this spell was kicked, instead search your library for up to two basic land cards, put them onto the battlefield, then shuffle your library.

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

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.)
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.)
Create a token that’s a copy of target creature. If this spell was kicked, create five of those tokens instead.

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.)
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 Kor Sanctifiers enters the battlefield, if it was kicked, destroy target artifact or enchantment.

Kicker—Sacrifice a creature. (You may sacrifice a creature in addition to any other costs as you cast this spell.)
Search your library for a basic land card, put that card onto the battlefield, then shuffle your library. If this spell was kicked, instead search your library for up to two basic land cards, put them onto the battlefield, then shuffle your library.

Kicker (You may pay an additional as you cast this spell.)
Flying
When Heartstabber Mosquito enters the battlefield, if it was kicked, destroy target creature.

Kicker (You may pay an additional as you cast this spell.)
When Torch Slinger enters the battlefield, if it was kicked, it deals 2 damage to target creature.

Kicker (You may pay an additional as you cast this spell.)
Creatures target player controls get -1/-1 until end of turn. If this spell was kicked, those creatures get -2/-2 until end of turn instead.

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.)
Target creature can’t be the target of spells or abilities your opponents control this turn. If this spell was kicked, that creature gets +4/+4 until end of turn.

Kicker (You may pay an additional as you cast this spell.)
Burst Lightning deals 2 damage to any target. If this spell was kicked, it deals 4 damage instead.

Kicker (You may pay an additional as you cast this spell.)
When Kor Sanctifiers enters the battlefield, if it was kicked, destroy target artifact or enchantment.

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.)
Create a token that’s a copy of target creature. If this spell was kicked, create five of those tokens instead.

Kicker (You may pay an additional as you cast this spell.)
Burst Lightning deals 2 damage to any target. If this spell was kicked, it deals 4 damage instead.

Kicker (You may pay an additional as you cast this spell.)
Creatures target player controls get -1/-1 until end of turn. If this spell was kicked, those creatures get -2/-2 until end of turn instead.

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.)
When Mold Shambler enters the battlefield, if it was kicked, destroy target noncreature permanent.

Kicker (You may pay an additional as you cast this spell.)
Reach (This creature can block creatures with flying.)
When Oran-Rief Recluse enters the battlefield, if it was kicked, destroy target creature with flying.

Kicker (You may pay an additional as you cast this spell.)
Target player discards a card. If this spell was kicked, that player discards three cards instead.