msem-instigator

When Into the Unknown enters, create two 1/1 Scout creature tokens that are all colors.
Whenever a land you control enters, if it doesn't have the same name as another land you control, put a +1/+1 counter on each creature you control.

When Relearn History enters, draw two cards.
You have no maximum hand size.

Hanweir Miscreant can't be blocked by creature tokens.
{2}{R}: Transform Hanweir Miscreant. Activate only if it's attacking.

Soldiers you control get +1/+1.
Whenever one or more creatures attack, create a 1/1 red Soldier creature token.

First strike
When Rapacious Rattler enters, choose one or two targets you don't control. It deals 2 damage to the first and 1 damage to the second.

Whenever Fox of the River Run attacks, if you control a creature with power 4 or greater, you may discard a card. If you do, draw a card.

{2}{R/G}: Wildershrine Warden gets +2/+2 until end of turn. You may have it assign its combat damage this turn as though it weren't blocked. Activate only once each turn.

Whenever another creature you control enters, this creature gets +1/+1 until end of turn. The first time each turn a nontoken Citizen or Peasant entering causes this ability to trigger, instead create a 1/1 white Peasant creature token.

Breezerider has flying as long as you control a Nymph.
Breezerider has hexproof as long as you control another Monkey.

As Surge of the Fellors enters, choose Fellor or Lafterii.
• Fellor — Warriors you control have haste.
• Lafterii — Wizard creatures you control have “{2}{R}, {T}: This creature deals 1 damage to target player or planeswalker.”

As long as you control four or more differently named lands, creatures you control get +1/+1.
As long as you control a land named Far-Off Lands, creatures you control get +1/+1.

As an additional cost to cast this spell, pay {2} or sacrifice a creature.
Menace

Target player sacrifices a creature.
Inscribe {3}{B}{R} ({3}{B}{R}: Exile this card from your hand inscribed on a creature you control. Whenever that creature attacks, its controller may cast a copy of the inscribed card without paying its mana cost. Inscribe only as a sorcery.)

Whenever another Fox you control enters, Pup of a Marigold Burrow deals 1 damage to each opponent.

Trample
Whenever Crocheted Buddy attacks, if it's enchanted or you cast a spell that targeted it this turn, create a 1/1 colorless Construct Actor creature token.

When Voice of Revolution enters, Rebel creatures you control get +1/+0 and gain haste until end of turn.

Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
Target creature has base power and toughness 4/4 until end of turn. If you're in a renaissance, untap it and it gains hexproof and indestructible until end of turn.

Reach, trample
When Anran, Root Steward enters, destroy up to three target noncreature permanents. For each permanent destroyed this way, its controller creates a colorless enchantment land token named Paradise with hexproof and “{T}: Add one mana of any color.”

Return target permanent to its owner's hand. You may put a permanent card that shares a card type with it from your hand onto the battlefield.

Choose one —
• Kilnfire deals 1 damage to each creature and planeswalker target player controls.
• Destroy target artifact.

Identity — When Order's Anointer enters, if you control at least two other creatures that share a creature type with it, creatures you control get +1/+1 until end of turn.

{T}: Add {C}.
{T}: Choose a color from among permanents you control. Add one mana of that color.

Defender
Ascend {1}{W}{W} ({1}{W}{W}: Exile this creature, then return it to the battlefield transformed. Ascend only as a sorcery.)

Enchant opponent
At the beginning of enchanted player's upkeep, exile up to two target cards from that player's graveyard. If two cards that share a type are exiled this way, you draw a card and you lose 1 life.

Erratic (When this creature dies, reveal the top four cards of your library. Put a creature card that costs less than this revealed this way onto the battlefield and the rest on the bottom of your library in any order.)