msem-instigator

When Return to the Home Plane enters, draw a card, then choose a card name.
Spells you cast with the chosen name cost {G/U}{G/U} less to cast and may be cast as though they had flash. This effect reduces only the amount of colored mana you pay.

Experience (Whenever this creature attacks, if it has fewer than three +1/+1 counters on it, put a +1/+1 counter on it.)

When Remnant of the Hunt leaves your graveyard, create a token that's a copy of it, except it has no mana cost.
Revive {3}{G}{G} ({3}{G}{G}, Exile this card from your graveyard: Create a token that's a copy of this card, except it has no mana cost. Activate this ability only any time you could cast a sorcery.)

Search your library for a card, put it into your hand, shuffle, then add three mana in any combination of colors.
{1}, Discard Tahli's Council: Add one mana of any color. Scry 1.

Create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)
Draw a card.

Enchant player
At the beginning of enchanted player's end step, they lose 2 life unless they discard a card.

Choose two —
• Put three +1/+1 counters on target creature.
• Target player searches their library for up to two basic land cards, reveals those cards, puts one onto the battlefield tapped and the other into their hand, then shuffles.
• Target creature you control fights target creature you don't control.
• Target player gains 5 life.

Up to one target creature gets +1/+1 and gains trample until end of turn. Put a -1/-1 counter on up to one target blocking or blocked creature.

When Keeper of Blue Incense enters, submerge target card from your graveyard. (To submerge a card, exile it, then put it on the battlefield face down under its owner's control as a 2/2 creature.)

Flying, lifelink

Counter target spell if it wasn't cast from a player's hand.

Reach
When Automated Overwatch enters, create a Function token with “If this spell would create one or more tokens, it creates twice that many of those tokens instead.” (It's an enchantment. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell.)

Flying
When Tengu Skyguard enters, return a permanent you control to its owner's hand.

When Emerging Ankulim enters, return each non-Elemental creature to its owner's hand, then Emerging Ankulim deals damage to each player equal to the number of cards in that player's hand.

Battalion — Whenever Callous Trainer and at least two other creatures attack, create a 1/1 white Warrior creature token that's tapped and attacking.

Whenever you cast a cryptic spell, create a 1/1 white Human creature token with lifelink. (Artifacts, enchantments, and modal spells are cryptic.)

Vanguard — Whenever a creature you control attacks alone, you may put a charge counter on Expert Belt and attach it to that creature.
Equipped creature has hexproof.
Equipped creature gets +1/+0 for each charge counter on Expert Belt.
Equip {2}

First strike, lifelink

{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast enchantment spells.

Ghost Sloop can't be blocked.
Crew 4 (Tap any number of creatures you control with total power 4 or greater: This Vehicle becomes an artifact creature until end of turn.)
Exile a creature card from your graveyard: Ghost Sloop becomes an artifact creature until end of turn.

Flying
At the beginning of your end step, if you gained 4 or more life this turn, create a 4/4 white Angel creature token with flying.

Flying, deathtouch
When Grim Raven of Wesgoth dies, return target non-Bird creature card from your graveyard to your hand.
Foreshadow {5}{B} (You may cast this spell for its foreshadow cost. If you do, also trigger its “dies” abilities when it enters.)

Elfcycling {2}{G} ({2}{G}, Discard this card: Search your library for an Elf card, reveal it, and put it into your hand, then shuffle.)

Enchant permanent
Whenever a counter is removed from enchanted permanent, you may put a counter of that type on another target permanent.

Creature spells you cast cost {1} less to cast.