msem-instigator

When Blackwall's Edge enters, if you control four or more lands, you may have each player conjure a card named Data-Point into their hand. (It's a sorcery that costs {2} with “Draw a card.”)
{T}: Add {C}.
When Blackwall's Edge is destroyed, return it to its owner's hand.

Lifelink
Whenever an opponent searches one or more libraries, they lose 2 life.
Attain {4}{B} ({4}{B}: Transform this. Spend at least three colors of mana to activate this, and only as a sorcery.)

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Enchanted creature gets +2/+2.
{1}{G}: Regenerate enchanted creature.

Disgraced 2 (This enters with two -1/-1 counters. Whenever it deals combat damage to a player, remove all -1/-1 counters from it.)
When Branded Contractor dies, you may put its counters on target creature.

Exile target nonland permanent.

Flying, lifelink
Pay 5 life: Put target permanent card in a graveyard onto the battlefield under your control.

Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated.

Draw three cards, then put a card from your hand on the bottom of your library.

Refuse to Submit deals 3 damage to any target. If that target is an attacking creature, it deals 5 damage instead.

Lifelink
When Stalked Healer enters, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Tap up to two target creatures. Put a stun counter on one of them. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Flashback {3}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Choose one —
• Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.
• Tap target creature and put three stun counters on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

{T}: Add {C}.
Crew 1 (Tap any number of creatures you control with total power 1 or greater: This Vehicle becomes an artifact creature until end of turn.)

Reach
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.)
When Angelbane Spider enters, destroy target creature with flying.

Target permanent phases out. (Then exile this card. You may cast the artifact later from exile.)

Livia's name is Senaturian Legion in addition to its other names as long as it's on the battlefield.
At the beginning of your upkeep, conjure a card named Senaturian Legion into your hand, then discard a card. (It's a 1/1 Human Soldier for {W}{W} that gets +1/+1 for each other creature on the battlefield named Senaturian Legion.)
Other Soldiers you control have haste.

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.

Counter target spell. If that spell is countered this way, put it on the bottom of its owner's library instead of putting it into its owner's graveyard. You may put up to three target cards from your graveyard on the bottom of your library in any order.

Creatures have “Whenever this creature attacks or blocks, it fights another target creature.”

Engage (This creature must be blocked each combat if able.)
Whenever Death Pits Gladiator perseveres, profit. (A creature perseveres when it survives damage. To profit, create a colorless Gold artifact token with “Sacrifice this artifact: Add one mana of any color.”)

Equipped creature gets +1/+1. If it's a token, it gets +3/+3 instead.
Equip {2}

Vigilance
Players can't untap more than two lands during their untap steps.

Breath of Hao'Tai deals 4 damage to any target.

This spell costs {1} less to cast for each artifact you control.
Search your library for an artifact creature card with mana value X or less, put it onto the battlefield, then shuffle.

You can't draw cards.
{2}{R}: Exile the top card of your library. You may play it this turn.