Secret Lair Countdown

Artifact

({G/P} can be paid with either {G} or 2 life.)
{1}{G/P}, {T}, Sacrifice a creature: Search your library for a creature card with mana value equal to 1 plus the sacrificed creature's mana value, put that card onto the battlefield, then shuffle. Activate only as a sorcery.

Birthing Pod

Legendary Artifact

If you would flip a coin, instead flip two coins and ignore one.

Krark's Thumb

Secret Lair Drop

Instant

Target creature gets +3/+3 until end of turn.

Giant Growth

Legendary Creature — Human Rogue Bard

{2}{G}, {T}, Put a verse counter on Yisan: Search your library for a creature card with mana value equal to the number of verse counters on Yisan, put it onto the battlefield, then shuffle.

Yisan, the Wanderer Bard

Sorcery

As an additional cost to cast this spell, sacrifice a creature.
Search your library for a creature card with mana value X or less, where X is 2 plus the sacrificed creature's mana value. Put that card onto the battlefield, then shuffle. Exile Eldritch Evolution.

Eldritch Evolution

Copy

Creature — Insect

Trample
Whenever this creature deals combat damage to a player, create a token that's a copy of this creature.

Giant Adephage

({G/P} can be paid with either {G} or 2 life.)
Put target card from a graveyard on top of its owner's library.

Noxious Revival

Insect

Legendary Planeswalker — Grist

As long as Grist isn't on the battlefield, it's a 1/1 Insect creature in addition to its other types.
+1: Create a 1/1 black and green Insect creature token, then mill a card. If an Insect card was milled this way, put a loyalty counter on Grist and repeat this process.
−2: You may sacrifice a creature. When you do, destroy target creature or planeswalker.
−5: Each opponent loses life equal to the number of creature cards in your graveyard.

Grist, the Hunger Tide

Legendary Creature — Insect Shaman

Flying
Whenever a player sacrifices another permanent, put a +1/+1 counter on each creature you control.