Neither of these are things you would actually want to do, but that's just the nature of trying to find things to do with cards with effects like this
The main focus of Dress Down is to interact as a counterpart to Urzas Saga and creatures with ETB effect so you will mainly see it as a dedicated sideboard slot
Spell Quick Spell Fusion Summon 1 Fusion Monster from your Extra Deck, by banishing Fusion Materials listed on it, that are all Link Monsters, from your field or GY
By doing so, the decks Leader gains a significant Power boost for greater survivability while also making the players board presence more threatening
Steel has some of the best removal options in the game, with its only weakness being the lack of a proper board wipe like Be Prepared
Hibernation and Hurkyls Recall are extremely narrow, and I personally prefer Aetherspouts over Aetherize (though they are largely interchangeable)