While Tocasia's Welcome is far from being our mighty green artifact, it can still provide you with enough card draw through the course of a game to justify running it, especially if you use creatures with flash like Cathar Commando that can be played on your opponents turn to draw a card
Cumulative upkeep has age counters
But even if there may be different sub-strategies, the key cards remain the same: cheap artifact creatures like Magitek Infantry to pile on early pressure, and powerful payoffs that take advantage of your flood of artifacts such as Valkyrie Aerial Unit
A player prompted to name a card may name the combined back face, and each player has the right to know that combined back face's characteristics at all times
All in all, this is a nice little inventory app for MTG players who wish to properly identify and price different cards
Gaining control of an artifact or creature doesn't cause you to gain control of any Auras or Equipment attached to it