Planechase

{T}: Add two mana in any combination of colors. Spend this mana only to cast Elemental spells or activate abilities of Elementals.

Whenever another creature enters the battlefield, you gain 1 life.

Soulless One's power and toughness are each equal to the number of Zombies on the battlefield plus the number of Zombie cards in all graveyards.

{T}: Add {C}. {2}{R}{W}, {T}: Target creature gains double strike until end of turn.

Sunburst (This enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

Each other player discards a card. You draw a card for each card discarded this way.

Syphon Soul deals 2 damage to each other player. You gain life equal to the damage dealt this way.

Changeling (This card is every creature type.) Whenever an opponent casts a spell, you may put a +1/+1 counter on Taurean Mauler.

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle your library.

Draw three cards. Then discard two cards unless you discard an artifact card.

When Tornado Elemental enters the battlefield, it deals 6 damage to each creature with flying. You may have Tornado Elemental assign its combat dam...

(Tree of Tales isn't a spell.) {T}: Add {G}.

Creatures of the creature type of your choice get +X/+X until end of turn.

Zombie spells you cast cost {1} less to cast. Zombie creatures you control get +2/+1.

(Vault of Whispers isn't a spell.) {T}: Add {B}.

{T}: Add two mana of any one color. Spend this mana only to cast artifact spells or activate abilities of artifacts.

At the beginning of each upkeep, create a 1/1 green Saproling creature token.

If an opponent had two or more creatures enter the battlefield under their control this turn, you may pay {U} rather than pay this spell's mana cos...

{1}: Exile target card from a graveyard.