We have a bunch of viable 3-mana artifacts that can ramp into Ugin (and then trigger his static ability to exile an opponent's card once he's in play) but don't forget about Hedron Archive as a low cost way to jump from 4 to 6 mana (7 with your land drop)
Since Alpha cards were anachronistically templated, this creates some strange interactions including, most problematically, the ambiguity in the use of the word discard. Unfortunately, some Alpha cards use the word discard to refer to destruction from play, as well as from hand
I also illustrated Elsa The Fifth Spirit and Wreck-It Ralph Demolition Dude, both of which ended up being included in the Amethyst and Ruby starter deck for the Shimmering Skies expansion
Lands often have no use late game in limited, so sacrificing a couple to give yourself a few extra cards never hurt, especially when the additional costs involved "tap" and not "spend mana"
For example, combining it with Shambling Ghast and Liliana, Untouched by Death allows you to go infinite