Sanity Grinding

Chroma — Reveal the top ten cards of your library. For each blue mana symbol in the mana costs of the revealed cards, target opponent mills a card. Then put the cards you revealed this way on the bottom of your library in any order.

Leechridden Swamp

(: Add .)
Leechridden Swamp enters the battlefield tapped.
, : Each opponent loses 1 life. Activate this ability only if you control two or more black permanents.

Somnomancer

When Somnomancer enters the battlefield, you may tap target creature.

Tormod’s Crypt

, Sacrifice Tormod’s Crypt: Exile all cards from target player’s graveyard.

Call of the Herd

Create a 3/3 green Elephant creature token.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Commune with Nature

Look at the top five cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Imperiosaur

Spend only mana produced by basic lands to cast this spell.

Zoetic Cavern

: Add .
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Dormant Sliver

All Sliver creatures have defender.
All Slivers have “When this permanent enters the battlefield, draw a card.”

Melancholy

Enchant creature
When Melancholy enters the battlefield, tap enchanted creature.
Enchanted creature doesn’t untap during its controller’s untap step.
At the beginning of your upkeep, sacrifice Melancholy unless you pay .

Dreadship Reef

: Add .
, : Put a storage counter on Dreadship Reef.
, Remove X storage counters from Dreadship Reef: Add X mana in any combination of and/or .

Squall Line

Squall Line deals X damage to each creature with flying and each player.

Vexing Sphinx

Flying
Cumulative upkeep—Discard a card. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
When Vexing Sphinx dies, draw a card for each age counter on it.

Frost Raptor

Flying
: Frost Raptor gains shroud until end of turn. ( can be paid with one mana from a snow permanent. A creature with shroud can’t be the target of spells or abilities.)

Bloodscale Prowler

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters the battlefield with a +1/+1 counter on it.)

Gristleback

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters the battlefield with a +1/+1 counter on it.)
Sacrifice Gristleback: You gain life equal to Gristleback’s power.

Toxin Sliver

Whenever a Sliver deals combat damage to a creature, destroy that creature. It can’t be regenerated.

Sandstone Warrior

First strike (This creature deals combat damage before creatures without first strike.)
: Sandstone Warrior gets +1/+0 until end of turn.

Toy Boat

Cumulative upkeep—Say “Toy Boat” quickly. (At the beginning of your upkeep, put an age counter on Toy Boat, then sacrifice it unless you say “Toy Boat” once for each age counter on it—without pausing between or fumbling it.)

Ghostly Prison

Creatures can’t attack you unless their controller pays for each creature they control that’s attacking you.