msem-instigator

Reach (This creature can block creatures with flying.)
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

You may exert Fleetfooted Survivalist as it attacks. (An exerted creature won't untap during your next untap step.)
Whenever an exerted creature you control deals combat damage to a player, draw a card.

Desecrate (When this creature enters, you may sacrifice an artifact or land.)
When Beastback Raider desecrates a permanent, discard your hand, then draw three cards.

Whenever The Winged Steed attacks, create a 4/4 red Dragon creature token with flying that's tapped and attacking. Exile that token at end of combat.
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.)

({T}: Add {B} or {R}.)
Ruined Shrine enters tapped unless you control two or more basic lands.

Galactic Detonation deals 2 damage to any target.
Augmented — If you've spent {W}{U}{B}{R}{G} to cast spells this turn, Galactic Detonation deals 5 damage instead.

{4}{B}{R}: Exile Watch the World Fade from your hand with seven apocalypse counters on it.
At the beginning of your upkeep, if Watch the World Fade is exiled, remove an apocalypse counter from it. If you do, each opponent loses 3 life unless they discard a card or sacrifice a nonland permanent. When you remove the last counter this way, each player loses the game.

Exile target artifact or enchantment. Its controller creates a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

Exile target nonland permanent. For each of its colors, its controller creates a 1/1 colorless Spirit creature token.

When Viashino Glutton enters, you may have it consume. If you do, create two 1/1 red Goblin creature tokens. (To consume, sacrifice another creature or exile a creature card from your graveyard.)

When Astute Sceneweaver enters, proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

Flying, haste
You may cast Charred Phoenix from your graveyard by exiling four permanents you control and/or cards in your hand and/or graveyard as an additional cost.

Archive 5 (As this enters, shuffle the top five cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Whenever you draw a permanent card from the archived library, you may have Defect's Study become a copy of it until end of turn.

Menace (This creature can't be blocked except by two or more creatures.)

Indestructible
If Tarraka-no-Oni would be put into a graveyard from anywhere, reveal Tarraka-no-Oni and shuffle it into its owner's library instead.

Players can't gain life.
Whenever a player casts a spell, Rage of the Ravaged deals 1 damage to that player.

Weathered Fortress enters tapped.
{T}: Add {U} or {R}.
{U}{R}: Until end of turn, Weathered Fortress becomes a 1/4 blue and red Golem creature with with “When this creature attacks, switch its power and toughness until end of turn” and “Whenever this creature attacks or blocks, torment yourself.” It's still a land. (To torment yourself, lose 3 life unless you discard a card or sacrifice a nonland permanent.)

Enchant creature
Enchanted creature has “Whenever this creature attacks, if there are at least two other attacking creatures, this creature gains +2/+2 until end of turn.”

Exile the top card of your library. You may cast it. (Then exile this card. You may play the land later from exile.)

When P-3 Ambusher enters, you may sacrifice a creature or discard a creature card. If you do, draw a card.

Overclock (You may have this creature overclock an artifact you control when either enters. If you do, it stops overclocking any other artifacts.)
Overclocked artifact has “{R}, {T}: This artifact deals 1 damage to any target.”

Overgrown Enclave enters tapped.
{T}: Add {G} or {U}.
{4}{G}{U}: Until end of turn, Overgrown Enclave becomes a Turtle creature with ward {2} in addition to its other types.
Scavenge {5}{G}{U}

Whenever you cast a noncreature spell, you may pay {1}. If you do, scry 2. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

When Makshi, Patron of Blades enters, search your library for an Equipment card, reveal it, put it into your hand, then shuffle. Add {W}{U}{B}{R}{G}. Spend this mana only to cast Equipment spells and activate abilities of Equipment.

Take an extra turn after this one. Exile Look to the Future.
Civilized — If you control an artifact, a creature, and an enchantment, until the end of your next turn, you may look at the top card of your library any time and you may play the top card of your library.