msem-instigator

When Mana Potion enters, scry 1, then draw a card.
{2}, {T}, Sacrifice Mana Potion: Add two mana of any one color.

(Add a quest counter as this enters. Sacrifice after 6.)
Whenever a land you control enters, add a quest counter.
1, 2, 3, 4, 5 — Reveal the top card of your library. If it's a land card, put it into your hand. Otherwise, you may put it into your graveyard.
6 — Until end of turn, creatures you control get +5/+5 and gain vigilance, trample, and haste.
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When Marauder's Broadsword enters, you may pay {1}. If you do, create a 1/1 white Soldier creature token and attach Marauder's Broadsword to it.
Equipped creature gets +2/+0.
Equip {2}

{1}{G}: Marrow Gorger must be blocked this turn if able.

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
Masked Lancer has first strike as long as it's attacking.
Whenever Masked Lancer mentors a creature, that creature gains first strike until end of turn.

Flash
Flying
When Mending Valkyrie enters, choose target permanent you own or permanent card with mana value 3 or less in your graveyard. You may return it to your hand.

At the beginning of your upkeep, draw a card.
At the beginning of your end step, discard a card.

Equipped creature gets +2/+0 and has haste.
Equip {2}

Flying, vigilance

Enchant creature
Enchanted creature gets +3/+3 and has trample.

When Mindwave Rod enters, attach it to target creature you control.
Equipped creature gets +1/+1 and has “Whenever this creature deals combat damage to a player, draw a card.”
Equip {2}

Glitch {2} (Remove one [restriction] for each time you pay the glitch cost.)
Create a 3/2 red creature token named Error with trample and haste. [Exile it at the beginning of the next end step.]

Vigilance
{7}{G}: Molting Linnorm gets +5/+5 and gains trample until end of turn.

Target creature gets +4/+3 until end of turn. Put a trample counter on it.

Align X (Choose modes with total ★ less than or equal to X. You may choose modes multiple times.)
• ★ — Whenever a creature attacks this turn, it gets +1/+1 until end of turn.
• ★★ — Create a 3/3 green Wurm creature token. It gains haste until end of turn.
• ★★★★★ — For each creature you control, create a token that's a copy of it. They gain haste.

Flying
Whenever another creature with flying you control enters, put a +1/+1 counter on Moonlight Strix.

Deathtouch
Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)

Haste
Whenever Mukal Charger attacks during your first combat phase each turn, untap all Constructs you control. After this phase, there's an additional main phase followed by an additional combat phase.
Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)

Trample, haste
Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)
At the beginning of your end step, sacrifice a creature.

Haste
Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)

As an additional cost to cast this spell, pay {3} or discard a card.
Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)

Trample
Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)

When Mukal Reaper enters, you draw a card and you lose 2 life.
Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)

Whenever Mukal Sire or another Construct you control enters, Mukal Sire deals 1 damage to each opponent.
Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)

When Mukal Swarmhorde enters, put a +1/+1 counter on each other Construct you control.
Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)