msem-instigator

Vigilance

Counter target spell unless its controller has you get three glory counters. (You lose glory counters before life. A player with ten or more glory counters wins the game.)

Choose one —
• Untap target creature. It gets +3/+3 until end of turn.
• Destroy target artifact or enchantment.

Reach
Wanderlust — Voliv Skyhunter gets +2/+0 and has first strike as long as you control four or more differently named lands.

When Gold Farmer enters, create a Treasure token.

As an additional cost to cast this spell, exile a multicolored card from your graveyard or pay {2}.
Vibrant Flames deals 3 damage to any target.

Destroy target nonland permanent if its mana value is less than or equal to the number of colors among spells you've cast this turn.

Foretell {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.)
Target creature gets -4/-0 until end of turn.
Draw a card.

Flying, vigilance
When Warden of Seas enters, tap all other creatures.
Each opponent can't untap more than one nonland permanent during each of their untap steps.

Striptide deals 1 damage to target creature. Unattach all artifacts from it. It becomes red until end of turn.
Draw a card.

When Flameform Amalgam enters, you may return target instant or sorcery card from your graveyard to your hand.
Recite {4}{R} (You may cast this creature from your graveyard for its recite cost. If you do, exile it when it enters or if it would leave the battlefield.)

Abandoned Chamber enters with X story counters on it.
{3}, {T}, Remove all story counters from Abandoned Chamber and exile it: Return a card from your graveyard to your hand for each counter removed this way.

Whenever you cast an instant or sorcery spell, put a loyalty counter on Reytali of Endless Muses.
[0]: Add X mana in any combination of colors, where X is the number of spells you've cast this turn.
[–3]: Create two 3/1 red Sand creature tokens with haste.

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

Target attacking creature gains double strike until end of turn. Arm it. (Create a colorless Equipment artifact token with “Equipped creature gets +1/+0” and equip {2}, then attach it to that creature.)

When Skelephant enters, you may mill three cards.
Foresight — Whenever you draw your second card each turn, you may put target creature card from your graveyard on top of your library.

Nonbasic lands have “Whenever this land becomes tapped, you lose 1 life unless you sacrifice this land.”

When Ryleth, Vengeful Shadow enters, create two 1/1 green Elf creature tokens.
Whenever you attack, you may pay {1}{B/G}. When you do, return target creature card with mana value less than or equal to the number of attacking creature tokens you control from your graveyard to the battlefield tapped and attacking.

Put target attacking or blocking creature on top of its owner's library.
Fuse (You may cast one or both halves of this card from your hand.)

Enchant creature
When Duelist's Wings enters, put two +1/+1 counters on enchanted creature.
Enchanted creature has flying.

{T}: Add {G}.
{1}{G}, {T}: Return target land card from your graveyard to the battlefield tapped.

Trample
Whenever a creature dies, put a +1/+1 counter on Venomclaw Skitterer. You gain 1 life.

Slay Them in the Aisles deals 2 damage to each non-Actor creature.

Whenever a nontoken creature you control perseveres, create a 1/1 blue Nymph creature token with flying. (A creature perseveres when it survives damage.)

You may have Warped Physiognomist enter as a copy of any creature on the battlefield with mana value 3 or less.