Polymorph, Transmodify, and Proteus Staff serve as the bedrock of the strategy, however, there are also Divergent Transformations, Chaos Mutation, and Guff Rewrites History as alternatives for Polymorph decks
Target creature gets +4/+4 until end of turn
For a single Blue mana, you can bounce any nonland permanent
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If you controlled at least one token when you declared Seasoned Warrenguard as an attacker, it doesn't matter whether or not you control any tokens as its ability resolves
