Flash
This spell costs {1} less to cast for each kind of counter among permanents you control.
Whenever Gregarious Grenouille enters the battlefield or attacks, choose a counter on a permanent you control. Put a counter of that kind on Gregarious Grenouille if it doesn't have a counter of that kind on it.

Whenever you activate one of Hieronymus Scratch's loyalty abilities, return up to one card from your graveyard to your hand.
[+1]: You may sacrifice a creature. If you do, create a 5/5 black Demon creature token.
[–2]: You may pay 2 life. If you do, each opponent loses 5 life.
[–4]: You may sacrifice a land. If you do, you may cast a card from your hand without paying its mana cost.

Ward {3}
Whenever Horror of the Mystic Sea attacks, defending player mills two cards. If they milled two nonland cards this way, Horror of the Mystic Sea can't be blocked this turn.

Trample
{1}{R}, Discard Ichor Connoisseur: Ichor Connoisseur deals 2 damage to any target.

Trample
When Lumbering Foeslayer enters the battlefield, it deals damage equal to its power to each opponent, each planeswalker, and each other creature.

If you would add mana of a color to your mana pool, you may instead add an amount equal to your devotion to that color instead.

Flash
When Primordial of Emila Glade enters the battlefield, return up to two instant and/or sorcery cards from your graveyard to your hand.
Once each turn, you may pay {U} rather than pay the mana cost for an instant or sorcery spell.

Flying
When Prototypical Broodwing enters the battlefield, choose one —
• Return target creature to its owner's hand.
• Return target instant or sorcery card from your graveyard to your hand.

Flash
Ward {4}
When Psychedelic Serpent enters the battlefield, gain control of target instant spell, sorcery spell, activated ability, or triggered ability. You may choose new targets for it.

Up to two target creatures can't block this turn. Create an X/1 red Ox creature token with trample and haste, where X is the total power of those creatures. Exile that token at the beginning of the next end step.

Flying
Drop — When Revenant Benefactor enters the battlefield, if you didn't cast any creature spells during your last turn, return target creature card from your graveyard to the battlefield.

This spell costs {X} less to cast, where X is the amount of life you have more than your starting life total
Lifelink
When Rose Garden Guardian enters the battlefield, put a +1/+1 counter on each other creature you control with lifelink.

Creatures you control get +1/+1 for each Shrine you control.

Trample
Whenever Starfouled Cervid attacks or dies, reveal the top seven cards of your library. You may put a non-Elk creature card from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

Exile the top six cards of target opponent's library. You may play cards exiled this way without paying their mana costs until the end of your next turn.

Defender, trample
At the beginning of combat on your turn, if you have at least 3 life more than than your starting life total, Thawing Yeti loses defender until end of turn. Otherwise, you gain 2 life.

[+2]: Each player puts their hand on the bottom of their library in a random order. You draw five cards, then each opponent draws two cards.
[+1]: Untap each land you control.
[–3]: Return up to three target nonland permanents to their owner's hands.
[–9]: You get an emblem with “Whenever an opponent casts their first spell each turn, gain control of it. You may choose new targets for that spell.”

Flying, vigilance
When The Army of Trax enters the battlefield, create a number of 0/0 white Army creature tokens equal to your devotion to white. Then put that many +1/+1 counters on each Army you control.

Vigilance, reach
When Thundering Serpent enters the battlefield, you gain 6 life.

Trample
{1}{G}, Discard Twisted Deadwood: Reveal the top four cards of your library. Put a land card from among them into your hand and the rest into your graveyard.

Ward—Pay 8 life.
You may have Wayward Coalescence assign its combat damage as though it weren't blocked.

Flash
When Zyxthax Apex enters the battlefield, each opponent loses 3 life and you gain 3 life.
When Zyxthax Apex leaves your graveyard, each opponent loses 3 life and you gain 3 life.

Vigilance
Whenever another creature you control dies, return to your hand target enchantment card from your graveyard with lesser mana value.

Flying

Favored
Whenever a legendary creature you control attacks, create a tapped and attacking token that's a copy of that creature, except it's not legendary and is an enchantment in addition to its other types.