Whenever a non-Spirit creature you control leaves the battlefield, if it had counters on it, put those counters on A Scent to Die For.
At the beginning of your end step, if A Scent to Die For has counters on it, you may create a 0/0 black Spirit creature token and move all counters from A Scent to Die For onto it.

Abandoned Warehouse enters tapped.
{T}: Add {B} or {G}.
{T}, Discard another card named Abandoned Warehouse: Draw a card.

Flying, vigilance, deathtouch
Whenever Abandoner of Flesh or another transformed permanent you control dies, return that card to the battlefield.

Return up to one target tapped artifact or creature to its owner's hand. Surveil 1.

Absorbed Painter enters with a +1/+1 counter, a flying counter, and a vigilance counter on it.
Absorbed Painter can't attack or block as long as it has a counter on it.
{U}, {T}: You may move a counter from a creature you control to another creature you control. Activate only as a sorcery.

Aethersteel Pouncer enters with a haste counter on it.

Trample
{T}, Pay 1 life: Add {C}.
Whenever Alranta Unleashed deals combat damage to a player, untap each Ruin you control. They become creatures in addition to their other types until the end of your next turn.
Spellcharge 6

{T}: Add {C}.
Whenever a creature you control entering the battlefield causes an ability of that creature to trigger, you may sacrifice Alranta, the Lofty Capital. If you do, return that creature to its owner's hand.

As an additional cost to cast this spell, tap four untapped artifacts and/or lands you control.
{T}: Each opponent loses 1 life and you gain 1 life.
Tap four untapped artifacts and/or lands you control: Untap Altar of Chrome.

Menace
Whenever Aphonai's Reveler attacks, defending player mills two cards. Then if that player has eight or more cards in their graveyard, Aphonai's Reveler gets +2/+1 and gains lifelink until end of turn.

Menace
Spellcharge 3
You may cast Archaic Straggler from your graveyard if you've spent at least three mana to cast spells this turn.

Haste
Arid Outrider gets +1/+0 as long as you control a token.

At the beginning of your upkeep, exile the top card of your library.
You may play cards exiled with Aristocracy as long as you've sacrificed a nonland permanent this turn.

Spells you cast from anywhere other than your hand can't be countered.
{1}{G/U}, {T}: Put a +1/+1 counter on target creature that doesn't have a +1/+1 counter on it. Activate only as a sorcery.

Search your library for a basic land card, reveal it, put it into your hand, then shuffle. If that card doesn't share a name with any lands you control, you gain 2 life.

Whenever Ascended Seer attacks, it gets +1/+0 until end of turn unless defending player pays {1}.

Equipped creature gets +2/+0 and has reach.
Whenever a creature you control enters, if it wandered, you may attach Aspirant's Hookrope to it.
Equip {2}

Trample
Whenever Aspiring Anarchist attacks, you may have its base power and toughness become equal to the power and toughness of another target attacking creature until end of turn.

Creatures you control get +1/+0.
Creatures you don't control get -1/-0.

{1}, Sacrifice Auto Sifter: Search your library for a basic land card, reveal it, put it into your hand, the shuffle.

Barren Ashlands enters tapped.
{T}: Add {B} or {R}.
{5}{B/R}: Barren Ashlands becomes a 3/3 black and red Lizard creature with first strike until end of turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to black and red. Activate only once each turn.

When Beatswitch Bot leaves the battlefield, if it's your turn, draw a card.

Lifelink
Whenever you gain life, you may pay {B}. If you do, put a +1/+1 counter on target creature you control with lifelink.
{4}{B}: Whenever you gain life this turn, each opponent loses that much life.

Choose one or both —
• Target creature you control gets +1/+1 until end of turn.
• Create a 1/1 white Human creature token.

Defender
{3}{W}, {T}, Sacrifice Border Junction: Create three 1/1 colorless Soldier creature tokens. Activate only as a sorcery.