Bloodhusk Ritualist

Multikicker {B} (You may pay an additional {B} any number of times as you cast this spell.)
When Bloodhusk Ritualist enters, target opponent discards a card for each time it was kicked.

Agent of Stromgald

Deathforge Shaman

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

Eladamri's Call

Search your library for a creature card, reveal that card, put it into your hand, then shuffle.

Pemmin's Aura

Enchant creature
{U}: Untap enchanted creature.
{U}: Enchanted creature gains flying until end of turn.
{U}: Enchanted creature gains shroud until end of turn. (It can't be the target of spells or abilities.)
{1}: Enchanted creature gets +1/-1 or -1/+1 until end of turn.

Orochi Leafcaller

Rumbling Aftershocks

Whenever you cast a kicked spell, you may have Rumbling Aftershocks deal damage to any target equal to the number of times that spell was kicked.

Lightkeeper of Emeria

Multikicker {W} (You may pay an additional {W} any number of times as you cast this spell.)
Flying
When Lightkeeper of Emeria enters, you gain 2 life for each time it was kicked.

Blood Celebrant

{B}, Pay 1 life: Add one mana of any color.

Wolfbriar Elemental

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

Freed from the Real

Enchant creature
{U}: Tap enchanted creature.
{U}: Untap enchanted creature.

Jegantha, the Wellspring

Companion — No card in your starting deck has more than one of the same mana symbol in its mana cost. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} as a sorcery.)
{T}: Add {W}{U}{B}{R}{G}. This mana can't be spent to pay generic mana costs.