Knight Ajani

Whenever you gain life, put a +1/+1 counter on Ajani's Pridemate.

[+1]: Put a +1/+1 counter on each of up to two target creatures.

[−2]: Return target creature card with converted mana cost 2 or less from your graveyard to the battlefield.

[−7]: You get an emblem with "At the beginning of your end step, create three 1/1 white Cat creature tokens with lifelink."

First strike, vigilance, lifelink

Aura and Equipment spells you cast cost {1} less to cast.

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

When Gallant Cavalry enters the battlefield, create a 2/2 white Knight creature token with vigilance.

When Hieromancer's Cage enters the battlefield, exile target nonland permanent an opponent controls until Hieromancer's Cage leaves the battlefield.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I, II — Create a 2/2 white Knight creature token with vigilance.

III — Knights you control get +2/+1 until end of turn.

[+1]: Reveal the top two cards of your library. An opponent chooses one of them. Put that card into your hand and exile the other with a silver counter on it.

[−1]: Put a card you own with a silver counter on it from exile into your hand.

[−2]: Create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control."

Flying, first strike, lifelink

Other Angels you control get +1/+1 and have lifelink.

Whenever another creature with power 2 or less enters the battlefield under your control, you may pay {1}. If you do, draw a card.

Flash

When Seal Away enters the battlefield, exile target tapped creature an opponent controls until Seal Away leaves the battlefield.

{T}, Sacrifice Tragic Poet: Return target enchantment card from your graveyard to your hand.