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 the battlefield 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.

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.

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}.

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

Flash
Multitude {3}{W}{W}
Flying
When Binding Whisper enters the battlefield, tap target creature you don't control.

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.

Flying
Whenever another creature enters the battlefield under your control, you may have Bravewing Hero dare 2.

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

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}

When Burning Wisdom enters the battlefield, exile the top card of your library. You may play it until end of turn.
Whenever a source you control deals noncombat damage to an opponent, exile Burning Wisdom. You may play it during your next turn.

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.

Enchant creature
Enchanted creature can't attack or block.
Whenever enchanted creature's controller amps it up, sacrifice Censor's Sanction and create a 1/1 colorless Servo artifact creature token.

Flying
When Charming Siren leaves the battlefield, if it wasn't blocking, you may bless target creature.

Whenever Claes, Shield of Karda attacks, another target attacking creature you control gains indestructible until end of turn.
Whenever a planeswalker enters the battlefield under your control, you may exile Claes, then return him to the battlefield transformed with a number of loyalty counters on him equal to the starting loyalty of that planeswalker.

Create a 1/1 white Spirit creature token with flying. If you've cast another instant or sorcery spell this turn, create two of those tokens instead.

Indulgence
When Conspiracy of Wealth enters the battlefield, draw a card.
Whenever you indulge, you may exile target card from a graveyard.

Choose one —
• Return target creature card from a graveyard to its owner's hand.
• Exile target creature card in a graveyard, then draw a card.