Mizzix's Mastery [Outlaws of Thunder Junction Commander] Cat Beast you may have Valakut

you may have Valakut

give us might

create a tapped token that's a copy of it

or Dragon creature card from your hand onto the battlefield tapped and attacking that opponent

If you exalt them

Mizzix's Mastery [Outlaws of Thunder Junction Commander] Cat Beast you may have ValakutSet: Outlaws of Thunder Junction Commander Type: Sorcery Rarity: Rare Cost: {3}{R} Exile target card that's an instant or sorcery from your graveyard. For each card exiled this way, copy it, and you may cast the copy without paying its mana cost. Exile Mizzix's Mastery. Overload 5RRR (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each".)