msem-instigator

Harmony — Create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”
When Bouquet Singer enters the battlefield, harmonize. (Trigger up to one harmony of one permanent you control.)

{T}: Add {C}.
{1}: Clutch of the Coil becomes a 1/1 Snake creature with poisonous 2 until end of turn. It's still a land. (Whenever this creature deals combat damage to a player, that player gets two poison counters.)

Haste
When Volt Vermin enters the battlefield, it deals damage to target player or planeswalker equal to the number of creatures with flash and/or haste you control.

Flying, prowess
{T}: Until end of turn, target land is every basic land type in addition to its other types.

Flying
Menagerie — When Bleakrealm Mini-Menace enters the battlefield, if there are five or more creature types among creatures you control, it deals 2 damage to target opponent and 2 damage to up to one target creature or planeswalker that player controls.

Counter up to one target spell unless its controller pays {2}. Until end of turn, you may cast spells as though they had flash.

{1}{R}, Discard a card: Draw a card.
{R}: You may put a creature card from your hand onto the battlefield. That creature gains haste. Activate only if twenty or more cards are in your graveyard.

Enchant creature
Enchanted creature loses all abilities and is a blue Frog creature with base power and toughness 1/1.

Flash (You may cast this spell any time you could cast an instant.)
Reach (This creature can block creatures with flying.)

Heroic — Whenever you cast a spell that targets Setessan Avenger, create a 1/1 green Nymph Dryad enchantment creature token with “{T}: Add {G}.”
Whenever Setessan Avenger deals combat damage to a player, untap all lands and Dryads you control.

Enchant creature
Enchanted creature gets -2/-2.
At the beginning of the upkeep of enchanted creature's controller, that player discards a card.

When Guardian of the Wurm enters the battlefield, create a 6/6 green Wurm creature token with trample.

Flying
Instant and sorcery spells you cast cost {1} less to cast.
{2}{U}: Target player mills two cards.

Dominance — When Mammoth Crab enters the battlefield, draw a card if you control the creature with the greatest power or tied for the greatest power.

Whenever Dawnrise Attendants attacks, put a +1/+1 counter on any number of target creatures that entered the battlefield this turn.

When Lady Ilyrana Jhalach enters the battlefield, create two 1/1 black and green Elf Warrior creature tokens with reach.
{G}, Tap an untapped Elf you control: Target Elf creature gets +2/+2 until end of turn.
{1}{B}, Tap two untapped Elves you control: Target non-Elf creature gets -2/-2 until end of turn.

Mind Palace enters the battlefield tapped.
{T}: Add {U} or {B}.
When Mind Palace enters the battlefield, you may put a loyalty counter on a planeswalker you control.

Put a +1/+1 counter on target creature and a +1/+1 counter on up to one target Citizen or Peasant.

Protection from Illusions
All cards that aren't on the battlefield, spells, and other permanents are Illusion kindreds in addition to their other types.

This spell costs {1} less to cast for each noncreature, nonland permanent you don't control.
When Earthform Pachyderm enters the battlefield, destroy target noncreature, nonland permanent. Its controller creates a 3/3 green Elephant creature token.

Vigilance
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.)

Non-Actor creatures can't block this turn.

Slipstream (This creature can't be blocked as long as only creatures with slipstream are attacking.)
Concord — Once each turn, when an opponent casts a spell or activates an ability that targets a Merfolk or enchantment you control, you may counter that spell or ability if there are four or more card types among permanents you control.

Put target nonland permanent on top of its owner's library. Create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

Enchant land
When Unexplored Regions enters the battlefield, draw a card.
Enchanted land is an artifact in addition to its other types and has “{T}: Add one mana of any color.”