msem-instigator

Archive X (As this enters, shuffle the top X cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Whenever you draw a card from the archived library, create two 1/1 green Insect creature tokens.

[+1]: Create a green enchantment token named Swarm with “At the beginning of your end step, create a 1/1 green Insect creature token.”
[–2]: Create a green enchantment token named Survive with “Whenever a creature you control dies, you gain life equal to its power.”
[–4]: Create a green enchantment token named Scrounge with “Whenever a creature you control enters, draw a card.”

Equipped creature gets +1/+2.
At the beginning of your end step, if Bygone Blade isn't attached to a creature, you get a glory counter. (You lose glory counters before life. A player with ten or more glory counters wins the game.)
Equip {2}

When Cadalon Experimenter enters, if you control an artifact, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Whenever you investigate for the first time each turn, investigate an additional time.
{T}, Sacrifice an artifact: Cadalon Inspector deals 2 damage to any target.

Artifact spells you cast cost {1} less to cast.
The first ability of an artifact you activate each turn costs {1} less.

Choose one or both —
• Put target detained creature on top of its owner's library.
• Detain target creature. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)

When Calamity Rose enters, each player chooses a number of artifacts they control equal to the number of artifacts controlled by the player who controls the fewest, then sacrifices the rest. Players sacrifice creatures, enchantments, lands and planeswalkers the same way.

Target creature or planeswalker you control explores. (Reveal the top card of your library. Put it into your hand if it's a land. Otherwise, put a +1/+1 or loyalty counter on that permanent, then you may put that card into your graveyard.)

Calciform Wastes enters tapped. When it does, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this, then you may put that card into your graveyard.)
{T}: Add {W}.
{2}{W}{W}: Calciform Wastes becomes a Turtle creature. (This effect lasts indefinitely.)

You may cast target instant or sorcery card from your graveyard this turn. If that spell would be put into your graveyard, exile it instead.

First strike
Whenever you make first contact, Callous Conduit deals 1 damage to target player or planeswalker. (You make first contact the first time each turn you cast a spell with a name not in your graveyard or control already.)

Target creature gets +3/+2 and gains menace until end of turn.
Quickdraw {1}{R} (When a creature you control blocks or becomes blocked, you may cast this spell for {1}{R}.)

Create two 1/1 green Elf Scout creature tokens. They gain reach until end of turn.

At the beginning of your second main phase, you may return a creature you control to its owner's hand. If you do, add {G}{U}.

Reach
Canopy Scout gets +1/+0 for each land card in your graveyard.

Gain control of target creature.

Search your library for a card and put it into your hand, then shuffle. You lose life equal to the number of cards in your hand.

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Flying
Whenever Carrier Pigeon attacks or blocks, target creature gains winnow until end of turn. (Damage dealt to it also causes its controller to lose that much life.)

This spell costs {1} less to cast for each creature card in your graveyard.
Trample

{3}, {T}: Return target creature card from your graveyard to the battlefield under target player's control. That creature deals damage equal to its power to that player.

Equipped creature gets +1/+1 for each differently named land you control.
Equip {3}

Choose one —
• You draw two cards and you lose 2 life.
• Target player discards two cards and you gain 2 life.

Return target creature card from your graveyard to your hand. You may trigger a death knell of that card.