msem-instigator

Ruins Pack gets +2/+2 as long as you sacrificed a permanent this turn.

As an additional cost to cast this spell, sacrifice a creature.
Return two target creature cards from your graveyard to your hand.

Attacking Pirates and Rogues you control get +1/+0.
{2}{U}: Tap target creature an opponent controls.

Return target creature to its owner's hand. You may have another target creature gain flying until end of turn.

Foretell {1}{U}{U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)
Counter target spell. If this spell was foretold, draw a card.

Slipstream (This creature can't be blocked as long as only creatures with slipstream are attacking.)

Choose three. You may choose the same mode more than once.
• You draw a card and you lose 1 life.
• Target opponent discards a card and loses 1 life.

Whenever you cast your second spell each turn, if it's an instant or sorcery spell, you may pay {1}{R}. If you do, gain control of target creature an opponent controls until end of turn. Untap that creature. It gains haste until end of turn.

Menace
Whenever a creature blocks, put a -1/-1 counter on that creature at end of combat.
Creatures with -1/-1 counters on them can't block.

Flying
As long as there are five or more different creature types among creatures you control, Adventuring Guildmage gets +1/+0 and has hexproof.

At the beginning of your end step, exile target permanent.
When Head of Ulko leaves the battlefield, return each other card exiled with it to the battlefield under your control.

Trample
Whenever Chasqui Veteran deals combat damage to a player, if you control three or more artifacts and/or enchantments, draw a card.

Trample, haste
When Soul of the Mountain enters, if it isn't a token, for each two Mountains you control, create a token that's a copy of it.

Draw X cards. Then if X is 2 or greater, you may discard any number of cards. For each card discarded this way, create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

Enchant opponent
When Down with the Ship enters, enchanted player discards a card unless they sacrifice a creature.
{1}{B}, Sacrifice Down with the Ship: Return target creature card from your graveyard to your hand.

When Enhance Armor enters, return an enchantment card from your graveyard to your hand.
Whenever you cast an enchantment spell, put a +1/+1 counter on a creature you control.

Uncharted Haven enters tapped.
As Uncharted Haven enters, choose a color.
{T}: Add one mana of the chosen color.

Jungle Hollow enters tapped.
When Jungle Hollow enters, you gain 1 life.
{T}: Add {B} or {G}.

{T}: Add {C}.
{2}, {T}: Prevent all combat damage target creature would deal this turn.

When Bloodpact Collector enters, destroy target creature an opponent controls that was dealt damage this turn or has a -1/-1 counter on it.

Enchant creature you control
When Heliod's Benefaction enters, scry 2.
Enchanted creature gets +1/+1 and has lifelink.

Enchant artifact
Enchanted artifact is an Equipment and has “Equipped creature gets +2/+0” and equip {0}.

When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.
Agonize (You may cast this card from your graveyard by putting a -1/-1 counter on a creature you control in addition to paying its other costs. Then exile this card.)

When Automated Blademaster enters, create a colorless Equipment artifact token named Sword with “Equipped creature gets +1/+1” and equip {1} and attach it to Automated Blademaster.

Surveil 1, then draw a card. (To surveil 1, look at the top card of your library. You may put that card into your graveyard.)
Create a tapped Treasure token.