Vigilance

Adeline's power is equal to the number of creatures you control.

Whenever you attack, for each opponent, create a 1/1 white Human creature token that's tapped and attacking that player or a planeswalker they control.

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

I — Create a 1/1 green Human Monk creature token with ": Add ."

II — Put a +1/+1 counter on each of up to two target creatures.

III — Exile this Saga, then return it to the battlefield transformed under your control.

Flying

Whenever another creature you control enters, you may pay . When you do, put X +1/+1 counters on that creature.

As long as you control five or more modified creatures, this creature gets +5/+5 and has trample. (Equipment, Auras you control, and counters are modifications.)

Whenever you gain life, target opponent loses that much life.

: Creatures you control gain lifelink until end of turn.