When Rib Collector enters, if a creature has died this turn, return target creature card from your graveyard to your hand.
Wander—{1}{B}, Sacrifice another creature.

Choose one —
• Exile target artifact or enchantment.
• Exile target creature you control, then return it to the battlefield under its owner's control. If that creature entering the battlefield causes any abilities to trigger, those abilities trigger an additional time.

Search your library for a card with flashback and exile it, then shuffle. You may cast that card this turn. At the beginning of your next end step, if that card is in exile, put it into your graveyard.
Flashback {U}{R}

Put two +1/+1 counters on target creature you control. It fights up to one target creature an opponent controls. You gain 4 life.

Reach
When Roaming Treefolk enters, target creature or Ruin gets +2/+2 until end of turn.
Wander {5}{G}

When Rotroot Hauler enters, mill three cards, then you may put a permanent card in your graveyard on top of your library.

Target creature you control gets +2/+2 and gains indestructible until end of turn. If it was the target of another spell or ability this turn, create two 1/1 white Bird creature tokens with flying.

Flashback costs you pay cost {2} less.
{R}, {T}, Discard a card: Draw a card.

Flash
When Sanctum of the Two Truths enters, draw two cards.
Spellcharge 4

{1}{R}, {T}, Discard a card: Draw a card. Scalding Crucible deals 1 damage to each opponent.
Spellcharge 5

Scry 2, then draw a card.
Flashback {4}{U}

Double target creature's power and toughness until end of turn.
Flashback {1}{G}

Flying
Creatures you control with base power 1 or less get +1/+0.

Flash
When Seal Away enters, exile target tapped creature an opponent controls until Seal Away leaves the battlefield.

Whenever a land you control enters, scry 1. If that land is a Ruin, scry 2 instead.

When Seer of the Aspirants enters, surveil 1.
Wander {2}{G}

Set Ablaze deals 2 damage to any target. You may discard up to two cards, then draw that many cards.

When Shaman of Rime's Fury enters, create a 0/0 colorless Spirit creature token. Put a number of +1/+1 counters on that token equal to the total number of instant and/or sorcery cards you own in exile and in your graveyard.

Flying
Short-Fused Firebird attacks each combat if able.
Whenever Short-Fused Firebird attacks, the next flashback cost you pay this turn costs {2} less.

Flash
Whenever you cast Siflir, Elder Pawn or another spell, if you paid an alternate or additional cost to cast it, draw a card.
Wander {3}{U}{U}

Enchant artifact or creature
Enchanted permanent loses all abilities and doesn't untap during its controller's untap step.
Wander {3}{U}{U}

Choose one —
• Exile target noncreature spell.
• Return target creature spell to its owner's hand. Draw a card.

When Skarni Patrol enters, if you control an Equipment, you draw a card and you lose 1 life.
Pay 2 life: The next equip ability you activate this turn costs {2} less to activate. Activate only once each turn.

Whenever Skarni Raider attacks, if it's equipped, you draw a card and you lose 1 life.

When Slumbering Grove enters, search your library for a basic land card, reveal it, put it into your hand, then shuffle.
Spellcharge 8