I can destroy your shield with: Explosion, Butterfly Effect, Pulverizer, Destroy (Mutant ability)
I can completely bypass your shield with: Poison, Momentum, Fire Lance, Ice Lance, Siphon Life
I can use your shield against you with: Steal, Steal(Mutant ability)
I can simply deny you from using your shield with: Discord, Devourers
^ These are some downsides to Phase Shield.
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actually they are not really the downsides to phase shields, but to every shield... so if u think about it phase shields are still, to me, the best
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because every shield can be stolen, and destroyed except for 2. (btw idk how to quote someone so i just make a line