msem-instigator

This spell can't be countered.
Whenever Bitter Leviathan becomes the target of a spell or ability, exile it. Return it to the battlefield under your control tapped and attacking at the beginning of the declare attackers step on your next turn. It can't be blocked that combat.

Counter target instant or sorcery spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Defender
Whenever Wall of Seclusion blocks a creature, that creature doesn't untap during its controller's next untap step.

Return up to two target creature cards with total mana value 4 or less from your graveyard to the battlefield.

{3}{W}: Tap target creature with power 4 or greater.

Choose one or more —
• Exile target artifact.
• Exile target enchantment.
• Exile target card from a graveyard.

Flying, vigilance, lifelink
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

First strike
Prevent all noncombat damage that would be dealt to Royal Knight.

Enchant creature
As long as enchanted creature has toughness 3 or less, it can't attack or block.

Tap up to two target creatures.
Draw a card.

Creatures your opponents control enter tapped.
{7}{W}: Tap all creatures target player controls.

Players can't get counters.
Counters can't be put on permanents.

Whenever Mortified Medium or another creature enters, you gain 1 life.
As long as you have at least 10 life more than your starting life total, Mortified Medium gets +4/+4 and has flying.

When Militia Surgeon enters, you gain 2 life.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Vigilance
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

{1}{W}, {T}: Tap target creature.
Put a -1/-1 counter on Insistent Ingenue: Untap Insistent Ingenue.

First strike
When Imperial Dragoon enters, target creature gets +2/+0 until end of turn.

Enchant creature
When Imperative Blessing enters, draw a card.
Enchanted creature gets +2/+2.

When Humble Tamer enters, create a 1/1 white Griffin creature token with flying.

Lifelink
When Herald of Royalty enters, creatures you control get +1/+1 and gain vigilance until end of turn.

Whenever Herald of Purity is dealt damage, it deals that much damage to any target.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Flying
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Whenever a creature blocks or becomes blocked by Faceless Virtue, that creature loses all abilities until end of combat.

Flying
{3}{W}, {T}: Exile another target creature you control, then return that card to the battlefield under your control.

When Divine Theurge enters, choose one —
• Return target enchantment card from your graveyard to your hand.
• Return target creature card with power 2 or less from your graveyard to your hand.