Dragonfire Dive — During your turn, Dion and other Knights you control have flying.

When Dion enters, create a 2/2 white Knight creature token.

4WW, T: Exile Dion, then return it to the battlefield transformed under its owner's control. Activate only as a sorcery.

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Bahamut, Warden of Light

[I] [II] Wings of Light — Put a +1/+1 counter on each other creature you control. Those creatures gain flying until end of turn.

[III] Gigaflare — Destroy target permanent. Exile Bahamut, then return it to the battlefield (front face up).

Flying

Dragonfire Dive — During your turn, Dion and other Knights you control have flying.
When Dion enters, create a 2/2 white Knight creature token.
{4}, : Exile Dion, then return it to the battlefield transformed under its owner's control. Activate only as a sorcery.

(As this Saga enters and after your draw step, add a lore counter.)
I, II — Wings of Light — Put a +1/+1 counter on each other creature you control. Those creatures gain flying until end of turn.
III — Gigaflare — Destroy target permanent. Exile Bahamut, then return it to the battlefield (front face up).
Flying