Whenever Spear of the Sun-Crowned attacks, if you control two or more enchanted creatures, it gains lifelink until end of turn.

As an additional cost to cast this spell, exile two permanent cards from your graveyard.
Whenever Spikey, Jack's Gravetiller deals combat damage to a player, return a card exiled with it to its owner's hand.
You may cast Spikey from your graveyard.

Whenever this creature deals combat damage to a player or planeswalker, put a +1/+1 counter on it.

When this creature transforms into Splintered Soul, create X 3/1 colorless Cyborg Soldier artifact creature tokens.
Whenever Splintered Soul or another Cyborg you control dies, you gain 1 life.

Menace
Surface {3}{B}{B}

Steamveil Model enters with a +1/+1 counter on it.

When this creature enters, you may search your library for a creature or land card with mana value 1 or less, put it onto the battlefield, then shuffle.
{1}{G}: You may return another creature or land you control to its owner's hand. If you do, this creature gains indestructible until end of turn.

Whenever this creature attacks, if you control another tapped creature, this creature gains first strike until end of turn.

Level up {1}{B}
[level 1-3] When this creature dies, return it to its owner's hand.
[level 4+] Whenever a creature you control dies, return it its owner's hand.

Menace

First strike
Cybersoul {4}{W}

When this creature enters, return target enchantment card from your graveyard to your hand.

When this creature enters, cache the top card of your library face down.

First strike
Amity — Whenever Tempered Fowl attacks, it deals 1 damage to up to one target creature. It can't block this turn. If exactly one other creature attacked with it, this ability triggers three times instead.

When Terror of Olantin enters, create a number of 1/1 blue Tentacle creature tokens equal to your devotion to green.

Test Subject Alpha enters with a +1/+1 counter and a trample counter on it.
At the beginning of your upkeep, you may move a counter from Test Subject Alpha onto another creature.

{T}: Add {C}.
Spellcharge 4

Flash
Whenever Thassa's Tideshaper attacks, defending player mills two cards and you draw a card. Then discard a card unless defending player has eight or more cards in their graveyard.

When Thornlasher Mortis enters, mill two cards.
Whenever one or more cards leave your graveyard, create a 1/1 green Saproling creature token. This ability triggers only once each turn.

Ninjutsu {1}{U}
If you would draw a card except the first one you draw in each of your draw steps, draw two cards instead.

Flying
Ward—{2}, Pay 2 life.
Whenever you cast a noncreature spell, draw a card.

When Tiril Ambassador enters, you may return target nonland card from your graveyard to your hand. You lose life equal to its mana value.
Basic landcycling {1}{U}

Tap another untapped creature you control: Toki gets +1/+1 until end of turn. If that creature had flying, Toki gains flying until end of turn. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance. Activate only as a sorcery.

Trailblazer Anarch has first strike as long as it's your turn.

Approval — When Triumphant Herd enters, you gain X life, where X is the number of colors among permanents you control.