Prismatic Star, Chromatic Sphere, and Expedition Map become useless for the Tron player, forcing them to assemble Tron through regular card draws (and that's definitely the slow way)
Sacrifice this at the beginning of the next end step. These two bonuses set the creature up for a free attack and you get the card you spent back at the end of your turn
It won't find place in Standard, but Modern has lots of great Wall creatures that could be easily turned into massive threats with the help of Arcades
I worked on my Sanguine Boon deck (as Ive come to call this particular combo deck) for almost a year before it really got off the ground, because I couldnt draw enough mana to play all the combo pieces when I needed to play them
But there aren't really any good targets for it
Because both of these effects are applied on the same layer 6 and they do not depend on each other, so they are applied according to the timestamps