Keyword: Multikicker

Multikicker (You may pay an additional any number of times as you cast this spell.)
When Deathforge Shaman enters the battlefield, it deals damage to target player or planeswalker equal to twice the number of times it was kicked.

Multikicker (You may pay an additional any number of times as you cast this spell.)
Swampwalk (This creature can’t be blocked as long as defending player controls a Swamp.)
Quag Vampires enters the battlefield with a +1/+1 counter on it for each time it was kicked.

Multikicker (You may pay an additional any number of times as you cast this spell.)
When Wolfbriar Elemental enters the battlefield, create a 2/2 green Wolf creature token for each time it was kicked.

Multikicker (You may pay an additional any number of times as you cast this spell.)
Joraga Warcaller enters the battlefield with a +1/+1 counter on it for each time it was kicked.
Other Elf creatures you control get +1/+1 for each +1/+1 counter on Joraga Warcaller.

Multikicker (You may pay an additional any number of times as you cast this spell.)
Choose any target, then choose another target for each time this spell was kicked. Comet Storm deals X damage to each of them.

Multikicker (You may pay an additional any number of times as you cast this spell.)
Creatures you control get +1/+1.
When Marshal’s Anthem enters the battlefield, return up to X target creature cards from your graveyard to the battlefield, where X is the number of times Marshal’s Anthem was kicked.

Multikicker (You may pay an additional any number of times as you cast this spell.)
Haste
Skitter of Lizards enters the battlefield with a +1/+1 counter on it for each time it was kicked.