msem-instigator

Enchant creature
When Valorous Ideal enters, target creature can't block this turn.
Enchanted creature gets +2/+0 and attacks each combat if able.
When Valorous Ideal is put into a graveyard from the battlefield, return Valorous Ideal to its owner's hand.

Flying
If a +1/+1 counter would be put on a creature you control, you may instead put your choice of a flying counter, a vigilance counter, or a trample counter on it.

Advance {4}{B} (Cast this for {4}{B} to advance it as it enters. {4}{B}: Advance this as a sorcery.)
Whenever Shearing Vampire advances, target player discards a card.

First strike
{2}{R}: Monstrosity 2. (If this creature isn't monstrous, put two +1/+1 counters on it and it becomes monstrous.)

When The Struggle for Death enters, choose target creature you don't control. Any number of creatures you control fight that creature.
Whenever a creature dies, look at the top card of your library. You may put it into your graveyard.

Trample
{T}: Add {C}.
At the beginning of your upkeep, you may pay {2}. When you do, Blundering Clocktower becomes a creature in addition to its other types until the beginning of your next end step. End the turn.

X target creatures can't block this turn.
Fuse (You may cast one or both halves of this card from your hand.)

Counter target spell. If that spell is countered this way, exile it and its controller's graveyard.

Pungent Beetle enters with a +1/+1 counter on it for each creature you controlled that died this turn.

Whenever Unbudging Badger attacks, if its power is 4 or greater, it gains trample until end of turn.

Search your library for a card, then shuffle and reveal that card. Any opponent may have you put it into your graveyard. If a player does, draw a card. Otherwise, put it into your hand.

{1}, {T}, Pay 1 life: Add one mana of any color. Put a charge counter on Paradox Rings.
{T}, Remove three charge counters from Paradox Rings and sacrifice it: Draw a card.

First strike
Whenever Martial Maestro attacks, other attacking creatures you control get +1/+0 until end of turn.

Create a 2/1 red and white Fox creature token. If you're attacking, that token enters tapped and attacking.
Showcase {4}{R} (Then if you cast this for its showcase cost, create a 1/1 red Bard creature token that can't block and exile this. Whenever it attacks, you may cast a free copy of this.)

Enchant creature
When Fists of Ironwood enters, create two 1/1 green Saproling creature tokens.
Enchanted creature has trample.

{T}: Izahl, the Stormbringer deals 1 damage to any target.
Whenever you cast a noncreature spell, you may untap target creature you control.

[+1]: Create a 1/1 red Dragon creature token with flying.
[–1]: Until end of turn, Flynn becomes a copy of target Dragon, except she has haste and indestructible. Her base power and toughness become equal to the number of Dragons you control.
[–3]: You may reveal a Dragon card you own from outside the game and put it into your hand.

{2}, {T}, Sacrifice Chronomancer's Bauble: For each permanent with a time counter on it, you may put a time counter on that permanent or remove a time counter from it.

When Flying Throne enters, attach it to target creature you control.
Equipped creature gets +1/+0 and has flying.
Equip {2}

Choose one —
• Cast Judgment deals 3 damage to target attacking creature.
• Exile target artifact or enchantment.

Creature tokens you control get +1/+1.
{3}{W}: Create a 1/1 white Warrior creature token.

Target opponent reveals their hand. You choose a nonland card from it. That player exiles that card.
Each player conjures a card named Data-Point into their hand. (It's a sorcery that costs {2} with “Draw a card.”)

Choose one —
• Target player sacrifices an artifact.
• Target player sacrifices an enchantment.

{3}, {T}: Look at the top five cards of your library. You may reveal a colorless card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Put target creature into its owner's library third from the top.