msem-instigator

Destroy target creature. (Cast a copy of this spell once while this creature is on the battlefield.)

Untapped creatures you control get +0/+2.

{T}, Sacrifice Camahueto Calf: Return target land card from your graveyard to the battlefield.

Vigilance
This spell costs {1} less to cast for each +1/+1 counter among creatures you control.

Each player reveals the bottom six cards of their library. For each player, put up to one permanent card revealed this way onto the battlefield under your control.

{T}, Discard a card: Add {C}.
Whenever you discard one or more cards, you may pay {2}. If you do, draw a card.

Armed — Whenever Hordedriver Enthusiast attacks, if it's equipped, creatures you control get +1/+0 and gain trample until end of turn.

At the beginning of combat on your turn, target creature you control with flying gets +1/+1 until end of turn.

Deathtouch
When Siesa Tremund enters, for each player, search that player's library for a card and exile it. That player shuffles. You may play those cards for as long as they remain exiled, and you may spend mana as though it were mana of any type to cast those spells.

Flying
Whenever Olson's Armada attacks, if only one creature crewed it, create a 1/1 white Bird creature token with flying. Otherwise, put a +1/+1 counter on Olson's Armada.
Crew 2 (Tap any number of creatures you control with total power 2 or greater: This Vehicle becomes an artifact creature until end of turn.)

Reach
Spined Tarantula gets +1/+1 for each creature with flying your opponents control.

I — Exile the top card of your library face down.
II — Exile any number of cards from your hand face down.
III — Calamity of Yore deals damage to target creature or planeswalker equal to the number of cards you own in exile. Return all cards exiled with Calamity of Yore to their owners' hands.

Neon Claw Assassin gets +1/+0 and has first strike as long as you've discarded a card this turn.

Flying
When Pyreheart Angel enters, exile target creature an opponent controls with mana value 3 or less until Pyreheart Angel leaves the battlefield.
When Pyreheart Angel leaves the battlefield, it deals 3 damage to each opponent.

Whenever Hero's Henchman attacks, another target creature you control gets +1/+1 until end of turn.

When Haunted Heirloom dies, create a Treasure token.

Desecrate (When this creature enters, you may sacrifice an artifact or land.)
When Beastback Raider desecrates a permanent, discard your hand, then draw three cards.

Haste

Choose target creature, then choose two —
• Put a +1/+1 counter on the chosen creature.
• The chosen creature gains lifelink until end of turn.
• The chosen creature gains indestructible until end of turn.

Take an extra turn after this one.
Compose (Then if you cast this from your hand, exile it and create a Saga token with “r3—You may cast a copy of this card from exile without paying its mana cost.”)

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)

Harness (You may tap a creature you control as you cast this spell. If you do, reduce this spell's mana cost by that creature's power.)
Search target opponent's library for a creature or planeswalker card and put it onto the battlefield under your control. That player shuffles.

As Flourishing Waterways enters, you may reveal a Forest or Island card from your hand. If you don't, Flourishing Waterways enters tapped.
{T}: Add {G} or {U}.