Return target creature to its owner's hand. If you've cast another instant or sorcery spell this turn, draw a card.

Create a tapped Leyshard token.

Exile target creature you control, then return that card to the battlefield under its owner's control.

Search your library for a basic land card, put it onto the battlefield, then shuffle.

Put a +1/+1 counter on target creature, then it gets your choice of +1/+1 or lifelink until end of turn.

You and General Diadem have hexproof as long as you control an artifact creature.
Sacrifice a non-Knight artifact: Create a 3/3 black Cyborg Knight artifact creature token.

Exile target spell you don't control. After this turn has ended, its owner may cast that card from exile by discarding a card in addition to paying its other costs.

[+1]: Up to one target creature gets +2/+0 and gains haste until end of turn.
[–1]: Add {R}. If Gericho, Ageless Wanderer entered this turn, add {R}{R} instead.
[0]: Exile Gericho and the top X cards of your library, where X is the number of loyalty counters on him. You may play cards exiled this way until the end of your next turn.

Whenever you cast an instant or sorcery spell, put a counter on Gi-Gecha, Tide of Victory from among flying, vigilance, trample, and +1/+1 that it doesn't have on it.
As long as Gi-Gecha has four or more counters on it, it has hexproof and is an artifact creature.
Crew 3

Whenever one or more creatures you control deal combat damage to an opponent, exile the top card of your library. Then you may create a 1/1 colorless Construct artifact creature token. If you don't, you may play the exiled card until end of turn.

Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life.
{B}{B}, Exile Gilded Death and six other cards from your graveyard: Create a tapped token that's a copy of Gilded Death.

Whenever you play a card with mana value equal to the number of charge counters on Gilded Font, put a charge counter on it.
{2}, Sacrifice Gilded Font: You draw X cards and gain twice X life, where X is the number of charge counters on Gilded Font.

When Gnosa, Research Executive enters, gain control of target nonland permanent until the end of your next turn. Untap it.
Permanents you control but don't own must be the targets of spells its owner casts if able.

At the beginning of combat on your turn, put a +1/+1 counter on equipped creature.
Equipped creature has flying as long as it has two or more +1/+1 counters on it.
Equipped creature has double strike as long as it has four or more +1/+1 counters on it.
Equip {2}

Hallowed Chamber enters tapped unless you control a basic non-Swamp land.
{T}: Add {B}.
{1}, {T}, Sacrifice Hallowed Chamber: Create two Treasure tokens.

Target creature gets +4/+4 until end of turn.

High Teqien enters tapped unless you control a basic non-Island land.
{T}: Add {U}.
{2}{U}, {T}, Sacrifice High Teqien: Gain control of target land. Its owner may search their library for a basic land card, put it onto the battlefield, then shuffle.

This spell costs {2} less to cast as long as you've cast another instant or sorcery spell this turn.
High Voltage deals 3 damage to any target.

Menace
Whenever Highseas Renegade deals combat damage to a player, exile the top card of their library. You may play that card until the end of your next turn, and mana of any type can be spent to cast it.

Hivecaste Vukoroq gets +1/+2 as long as you control another creature named Hivecaste Vukoroq.

Flash
Enchant creature
Enchanted creature can't attack or block.

Holo-Map enters with two charge counters on it.
{1}, {T}, Remove a charge counter from Holo-Map: Target creature can't be blocked this turn. Scry 2.

Put a hexproof counter on target creature you control. At the beginning of the next end step, remove a counter from that creature.

When you cast this spell, target player skips their next combat phase.
[+1]: Create a 3/1 white Knight creature token with “As long as it's your turn, this creature has indestructible.”
[0]: Exile a permanent card from your graveyard. Return that card to the battlefield at the beginning of your next turn's end step.
[–3]: At the beginning of your next turn's end step, destroy all creatures.

Trample
When Imperfect Fugisaur enters, you may sacrifice an artifact. If you do, it gains haste until end of turn.
Whenever Imperfect Fugisaur deals combat damage to a player, that player sacrifices an artifact. If they can't, you draw a card.