First strike
Whenever you cast an instant or sorcery spell, Urabrask deals 1 damage to target opponent. Add R.
R: Exile Urabrask, then return it to the battlefield transformed under its owner's control. Activate only as a sorcery and only if you've cast three or more instant and/or sorcery spells this turn.
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The Great Work
(As this Saga enters and after your draw step, add a lore counter.)
[I] The Great Work deals 3 damage to target opponent and each creature they control.
[II] Create three Treasure tokens.
[III] Until end of turn, you may cast instant and sorcery spells from any graveyard. If a spell cast this way would be put into a graveyard, exile it instead. Exile The Great Work, then return it to the battlefield (front face up).