The two actions provided are not cross-restrictive. Each can be performed once during the same turn by the same minion.
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Barbaro Lucchese
G3Independent: Barbaro can change his clan to Tremere antitribu as +1 stealth action. He can put 1 taint counter on a minion as a +1 stealth Ⓓ action; if the minion has 2 taint counters, burn them and the minion becomes infernal. Infernal.