Rootha, Mastering the Moment
1 printing listed in our catalog, from newest to oldest.
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Official rulings
3 rulings · in English, source ScryfallA spell's mana value is determined only by its mana cost. Ignore any alternative costs, additional costs, cost increases, or cost reductions.
2026-03-20 · Wizards of the CoastRootha's ability will check as your beginning of combat step starts to see if you've cast an instant or sorcery spell this turn. If you haven't, the ability won't trigger at all. It's not possible to cast an instant or sorcery spell during your beginning of combat step in time to have the ability trigger.
2026-03-20 · Wizards of the CoastFor spells you cast with {X} in their mana costs, use the value chosen for X to determine the spell's mana value.
2026-03-20 · Wizards of the CoastAll printings