Jill, Shiva’s Dominant // Shiva, Warden of Ice

When Jill enters, return up to one other target nonland permanent to its owner's hand.
, : Exile Jill, 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 — Mesmerize — Target creature can't be blocked this turn.
III — Cold Snap — Tap all lands your opponents control. Exile Shiva, then return it to the battlefield (front face up).