Answer 1

A frozen Pokémon can still use the moves Fusion Flare, Flame Wheel, Sacred Fire, Flare Blitz and Scald while frozen; these moves will thaw the user, thaw the opponent if possible, and deal damage to the opponent.

Source

Answer 2

Well any move that will heal status(Aromatherapy if another Pokemon in party know it.) and during Sunny Day freezing is less likely to happen.

Comments

Why was I down voted? I did not give false information. I gave information that Mew did not.

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It is not impossible to be frozen during sunny weather, just less likely.

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I will fix that then.