Milling random cards will give pseudo card quality or card advantage, or it can be a mana saving too
I also like that Xenagos ability triggers at your combat step, giving you a trigger the turn you play him
Dredge actually wins by beating down with creatures, hence the aggro part, but you build your board state via combos and graveyard interaction
See a trend
The Unlimited Black Lotus we secured for this event is a graded 6.0 by Beckett, but it's tough to shuffle in its current sleeve, and might be considered "marked" by the head judge: Lukas will have the right tools on hand to crack the case safely for the card and for himself, and we will free the flower to be played again
Join the Dead One generic, two black, Instant - Common Target creature gets -5/-5 until end of turn