They give you speed through ramp and resilience through artifacts, with the caveat that they do not contribute to your devotion to any specific color a vital consideration for decks relying on Theros-style god cards or specialized mana costs
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Since the Uro ban, Ive seen more Dredge decks popping up and trying to dump a ton of power on the board before their opponents can set up defenses or enact their own game plan
You must pay all costs and follow all timing rules for spells cast from the top of your library this way
The color in general hits all the flavor notes that you want it to while offering up plenty of playable choices
I also included a lot of cards that can flicker creatures on their own, that way you can still be doing what you want if you cant have Brago on the field for whatever reason