msem-instigator

Determined Chevalier has vigilance as long as it's embattled. (A creature is embattled if it has a counter on it or a permanent you control attached to it.)

Whenever Determined Hero attacks, upgrade it. (Give it one of the listed counters it doesn't already have.)
• +1/+1
• Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)

Whenever Determined to Prevail or another artifact or enchantment you control enters, target creature you control gets +1/+1 and gains indestructible and vigilance until end of turn.

Lifelink
Sacrifice Devoted Apothecary: Remove a counter from target permanent.

Sacrifice Devoted Dancer: Target creature gains indestructible until end of turn. If it's your turn, shuffle Devoted Dancer into its owner's library.

Vigilance (Attacking doesn't cause this creature to tap.)

When Diao enters, create two 1/1 white Warrior creature tokens.
Whenever Diao attacks, put a +1/+1 counter on each attacking creature you control with the least power among those creatures.

When Diao, Dragoon Captain enters, create three 1/1 red and white Warrior creature tokens.
Whenever a creature you control attacks, invigorate 1. (Choose a creature with the least power among creatures you control and put a +1/+1 counter on it.)

Create three 1/1 white Soldier creature tokens.
Soldiercycling {2}{W} ({2}{W}, Discard this card: Search your library for a Soldier card, reveal it, and put it into your hand, then shuffle.)

When Digital Divinity enters, put a +1/+1 counter on each creature you control.
Whenever you gain life, you may return Digital Divinity to its owner's hand.

Vigilance
Tribute 3 (As this creature enters, an opponent of your choice may put three +1/+1 counters on it.)
When Dignified Serpent enters, if tribute wasn't paid, put a +1/+1 counter on each other creature you control.

Permanents you control gain indestructible until your next turn.
Fuse (You may cast one or both halves of this card from your hand.)

When Diligent Analyst enters, you may put an progress counter on a Project you control.
Diligent Analyst gets +1/+1 as long as you control two or more enchantments.

Diligent Believer gets +1/+1 for each +1/+1 counter on other creatures you control.

{3}{W}{W}: Detain target nonland permanent. (Until your next turn, that permanent can't attack or block and its activated abilities can't be activated.)

As long as Diligent Protector is untapped, it gets +0/+2.

Enchant creature
Enchanted creature can't attack or block.
Enchanted creature can't be the target of spells or abilities your opponents control.

Exile target nonland permanent.

When Disassociate enters, exile target creature until Disassociate leaves the battlefield.

Disciple of Atemhar has lifelink as long as it has a +1/+1 counter on it.

When Disciple of Faradia enters, search your library for an Angel or Aura card, reveal it, and put it into your hand, then shuffle. You gain life equal to its mana value.
As long as you control an Angel, Disciple of Faradia gets +2/+2, has flying, and is an Angel in addition to its other types.

Chronicle (As this enters and after your draw step, add a lore counter. Stop after III.)
[Lore I-II] Until your next turn, up to one target creature can't attack or block and its activated abilities can't be activated.
[Lore III] Target opponent skips their next combat phase.

Whenever Disenfranchised Blacksmith attacks, other Citizens and Peasants you control get +1/+0 until end of turn.