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While somewhat suitable for combo extension, G.Wave pales as a horizontal assist compared to beams due to long startup. G.Tsunami as a THC recovers fastest and yields the most corner-carry.
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Armor during frames 23-32. G.Charge(AA) as an assist has armor early enough that it can be used as a "get off me" move. It sends the foe high, limiting conversion mostly to characters with aerial groundbounce attacks.