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.

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.

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.

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.

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

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.

Flying
Whenever another creature you control enters, you may have Bravewing Hero dare 2.

{VP}{VP}{VP}, Sacrifice Bright-Lights Terrier: Creatures you control gain indestructible until end of turn.

Target creature gets -X/-0 until end of turn, where X is the number of cards in your graveyard.
Draw a card.

Search your library for a basic land card, reveal it, put it into your hand, then shuffle. If this spell's flashback cost was paid, instead search your library for any number of land cards, put them onto the battlefield tapped, then shuffle.
Flashback {3}{W}{U}{B}{R}{G}

Callaphe can't be blocked by creatures with mana value 4 or greater.
Whenever Callaphe the Mariner deals combat damage to a player, you get an experience counter. Then if you have three or more experience counters, bless target player.

Flying
Whenever Capital Skyraiders deals combat damage to a player, integrate the top card of that player's library.
Capital Skyraiders gets +3/+3 as long as four or more cards are integrated onto it.

{T}: Target player exiles a card from their graveyard.
{2}, {T}: Exile target card from a graveyard. Then if there are three or more cards exiled with Censor Tablet, exile it. If you do, draw two cards.