msem-instigator

Haste
Sacrifice a land: Trail Blazer explores. You may put a basic land card from your hand onto the battlefield tapped. (Reveal the top card of your library. Put it into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then you may put that card in your graveyard.)

Tap target creature, then draw X cards, where X is its mana value.

At the beginning of your end step, you may mill a card.
{3}{B}, Exile two cards from your graveyard: Target player loses 2 life.

Put target permanent card from your graveyard on top of your library.

Whenever a basic land you control enters, add one mana of any color.

At the beginning of your upkeep, you may return a nontoken creature you control to its owner's hand. If you do, create a 2/2 green Elk creature token.

Whenever a nonland permanent enters under an opponent's control this turn, gain control of that permanent until the end of your next turn. It gains haste until end of turn.

Trained Reptile gets +1/+1 for each enchantment you control.
Trained Reptile can't be blocked by creatures with power 2 or less.

Flying (This creature can't be blocked except by creatures with flying or reach.)
When Trained Warhawk enters, create a 1/1 white Soldier creature token.

When Trainer of the Abyss dies, create a 1/1 black Demon Hound creature token with deathtouch.

Vanguard — Whenever a creature you control attacks alone, draw a card.

Rouse 2. Target permanent you controls fights target creature you don't control if both are creatures. (Distribute two +1/+1 counters among permanents you control. If they aren't creatures, tap them and they become 0/0 creatures in addition to their other types.)

Each creature you control enters with an additional +1/+1 counter on it.
When Training Sim enters, create a Function token with “Target creature you control fights target creature you don't control.” (It's an enchantment. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell.)

Equipped creature gets +2/+2 and has hexproof and vigilance.
Equip {2}

Puzzlebox (Begin the game with this and another card you own from outside the game in the command zone, locked. That card is face down until you unlock this.)
{2}, Discard your hand: Unlock Traitor's Gambit. If the revealed card is red, put it into your hand. Otherwise, put it on top of your library.

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

Land creatures you control get +1/+1 and have vigilance.
Enchantment creatures you control get +1/+1 and have lifelink.
Artifact creatures you control get +1/+1 and have flying.

Whenever a creature you control attacks and isn't blocked, 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 that creature, then put the card back or put it into your graveyard.)

Tranquil Shrine enters tapped.
When Tranquil Shrine enters, if you don't control a legendary creature, sacrifice it unless you pay {1}.
{T}: Add one mana of any color.

When Transcended Explorer enters, if you control another enchantment, draw a card.

Enchant creature
When Transcendent Arts enters, draw a card.
Enchanted creature can't be blocked by creatures that don't share a creature type with it.

Reveal the top four cards of your library. You may put a creature or Revelation card from among them into your hand. Put the rest into your graveyard.

When Transformative Paints enters, create a 1/1 white Human creature token, then attach Transformative Paints to it.
Equipped creature gets +1/+0 and has prowess.
Equip {3}

Kicker—Sacrifice a creature. (You may sacrifice a creature in addition to any other costs as you cast this spell.)
You draw two cards and you lose 2 life. If this spell was kicked, you draw four cards and you lose 4 life instead.

Draw a card. (Cast a copy of this spell once while this creature is on the battlefield.)