: Add . Cephalid Coliseum deals 1 damage to you.
Threshold — , , Sacrifice Cephalid Coliseum: Target player draws three cards, then discards three cards. Activate only if seven or more cards are in your graveyard.

: Add . Barbarian Ring deals 1 damage to you.
Threshold — , , Sacrifice Barbarian Ring: It deals 2 damage to any target. Activate only if seven or more cards are in your graveyard.

: Add . Cabal Pit deals 1 damage to you.
Threshold — , , Sacrifice Cabal Pit: Target creature gets -2/-2 until end of turn. Activate only if seven or more cards are in your graveyard.

: Add . Nomad Stadium deals 1 damage to you.
Threshold — , , Sacrifice Nomad Stadium: You gain 4 life. Activate only if seven or more cards are in your graveyard.

: Add . Centaur Garden deals 1 damage to you.
Threshold — , , Sacrifice Centaur Garden: Target creature gets +3/+3 until end of turn. Activate only if seven or more cards are in your graveyard.

, , Sacrifice Sungrass Egg: Add . Draw a card.

, , Sacrifice Skycloud Egg: Add . Draw a card.

, , Sacrifice Mossfire Egg: Add . Draw a card.

Whenever Spark Mage deals combat damage to a player, you may have Spark Mage deal 1 damage to target creature that player controls.

Target player discards a card.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Shroud (This creature can't be the target of spells or abilities.)
Threshold — Nimble Mongoose gets +2/+2 as long as seven or more cards are in your graveyard.

Shuffle any number of target creature cards from your graveyard into your library.

, , Sacrifice Shadowblood Egg: Add . Draw a card.

Engulfing Flames deals 1 damage to target creature. It can't be regenerated this turn.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Vigilance
Threshold — As long as seven or more cards are in your graveyard, Mystic Penitent gets +1/+1 and has flying.

, , Sacrifice Darkwater Egg: Add . Draw a card.

As an additional cost to cast this spell, exile X cards from your graveyard.
You draw X cards and you lose X life.

: Testament of Faith becomes an X/X Wall creature with defender in addition to its other types until end of turn.

Choose a card name, then target player mills a card. If a card with the chosen name was milled this way, you draw two cards. Otherwise, you draw a card.

Protection from creatures

Enchant creature
Whenever enchanted creature is dealt damage, its controller creates that many 1/1 green Squirrel creature tokens.

Destroy target nonbasic land unless its controller has Lava Blister deal 6 damage to them.

Reach (This creature can block creatures with flying.)
, Sacrifice Skyshooter: Destroy target attacking or blocking creature with flying.

Whenever Rotting Giant attacks or blocks, sacrifice it unless you exile a card from your graveyard.

Target creature gets +2/+2 and gains trample until end of turn.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Howling Gale deals 1 damage to each creature with flying and each player.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Volcanic Spray deals 1 damage to each creature without flying and each player.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flying
Your maximum hand size is reduced by three.

Flying
Whenever a creature with flying dies, put a +1/+1 counter on Soulcatcher.

Discard two cards: Create a 2/2 black Zombie creature token.

Exile up to three target cards from a single graveyard.

, Mill a card: Add . (To mill a card, put the top card of your library into your graveyard.)

When Minotaur Explorer enters, sacrifice it unless you discard a card at random.

When a player casts a spell, sacrifice Standstill. If you do, each of that player's opponents draws three cards.

Target sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (Mana cost includes color.)
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Target blocking creature gets +4/+4 until end of turn.
Draw a card.