What would help the most?

Question

Charizard my mix sweeper needs a power up move
and people reccomended me these moves:

sword dance powers up attack

dragon dance powers up attack and speed

roost recovers hp

Answer 1

Dragon dance becuase there are many things that can out speed charzard and roost is useless becuase he can be OHKOed by stone edge at any given moment

Comments

After using Roost, Charizard is only 2x weak to rock instead of 4x, but its also 2x weak to ground instead of 0x. Either way he's pretty vulnerable.

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But Roost Isnt That Predictable.