Planechase

First strike Whenever another creature dies, you may put a +1/+1 counter on Rockslide Elemental.

Flying, haste

When Rotting Rats enters the battlefield, each player discards a card. Unearth {1}{B} ({1}{B}: Return this card from your graveyard to the battlefi...

At the beginning of your upkeep, Rumbling Slum deals 1 damage to each player.

{2}: Sarcomite Myr gains flying until end of turn. {2}, Sacrifice Sarcomite Myr: Draw a card.

{T}: Each player loses 1 life for each Zombie on the battlefield.

{T}: Add {U}.

When Silverglade Elemental enters the battlefield, you may search your library for a Forest card and put that card onto the battlefield. If you do,...

Whenever another artifact enters the battlefield under your control or another artifact you control leaves the battlefield, you may pay {1}. If you...

{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.

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

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

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

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

{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.

{1}: Exile target card from a graveyard.

Flying {U}, Sacrifice Wizard Replica: Counter target spell unless its controller pays {2}.