msem-instigator

Return up to one target creature or planeswalker card with mana value 3 or less from your graveyard to the battlefield. Creatures you control get +1/+1 until end of turn.

As Grim Bastion enters, you may pay 2 life. If you don't, Grim Bastion enters tapped.
{T}, Sacrifice Grim Bastion: Search your library for a Swamp or Forest card, put it onto the battlefield, then shuffle.

{B}, {T}, Exile two cards from your graveyard: Create a 1/1 white Spirit creature token with flying.

Lifelink
When Grizzled Warpriest enters, starting with you, each player may gain 3 life. For each opponent that does, create a Treasure token.

{T}: Add {C}.
{T}: Add one mana of any color. Activate only if two or more land cards are in your graveyard.

Once each turn, when Groz, the Nightshaper enters or you attack with one or more Horrors, you may return target nonlegendary creature card from your graveyard to your hand. Then if Groz isn't a token, create a token that's a copy of that creature card.
{2}{B}{B}, Discard Groz: Create a token that's a copy of Groz, the Nightshaper, except it's 4/4 and isn't legendary. Activate only as a sorcery.

Creature spells you cast cost {1} less to cast.
Whenever you attack, target attacking creature you control gets +1/+1 until end of turn. If it's legendary, put a +1/+1 counter on it instead.

Choose one —
• Target creature you control gets +1/+1 until end of turn if it's enchanted. Then it fights target creature you don't control.
• Destroy target enchantment.

At the beginning of combat on your turn, for each permanent type, aetherize up to one target permanent you control of that type. (To aetherize, create a token that's a copy of it, then exile that token.)

Haste
Gyr, Awoken World has all activated abilities of other lands you control.
As long as Gyr, Awoken World is on the battlefield or in your graveyard, it's a land in addition to its other types.

When Gyreon Pickpocket enters, target opponent discards a card. If a land card was discarded this way, draw a card.

Exile up to one target nonland card from an opponent's graveyard. Copy it. You may cast the copy. (You still pay its costs, including color. Copies of permanents enter as tokens.)
Draw a card.

Target creature you control deals damage equal to its power to target creature you don't control. If the creature you control is legendary, excess damage is dealt to that creature's controller instead.

{7}{G}: Distribute three +1/+1 counters among up to three target creatures you control. This ability costs {2} less to activate if you control a legendary creature.

Flying
Whenever Haerthach, the Wight King deals combat damage to a player, you may sacrifice another creature. When you do, create a 1/1 white Spirit creature token with flying. Return the sacrificed card to the battlefield tapped and under your control at the beginning of the next end step.

Vigilance
The first instant or sorcery spell you cast each turn has conspire. (As you cast that spell, you may tap two untapped creatures you control that share a color with it. When you do, copy it and you may choose a new target for the copy.)

Equipped creature gets +2/+2.
Whenever equipped creature attacks, until your next turn, up to one target creature can't attack or block and its activated abilities can't be activated.
Equip {2}

Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{U}, {T}: You may tap or untap target Human.

Trample
As an additional cost to cast creature spells, you may sacrifice a permanent. If you do, that spell costs {2} less to cast and that creature enters with an additional +1/+1 counter on it.

As Harlowe, Thespian Extraordinaire enters, choose a color and creature type.
Harlowe, Thespian Extraordinaire is the chosen color.
Harlowe, Thespian Extraordinaire is the chosen type in addition to its other types.

Tap any number of untapped creatures you control. You gain 4 life for each creature tapped this way.

Wanderlust — When you cast this spell, you may copy it if you control four or more differently named lands. You may choose new targets for the copy.
Target creature you don't control gets -3/-3 until end of turn.

Creatures with defender you control can attack as though they didn't have defender.
Each creature you control assigns combat damage equal to its toughness rather than its power.

Whenever another creature you control enters, you may gain 1 life.
Whenever a creature enters under an opponent's control, you may have that player lose 1 life.

Menace
Art of war — At the beginning of your end step, if Hashiro's Infiltrator dealt damage to an opponent this turn, that player discards a card.