It can recycle some of your more impactful ETB cards like Puppeteer Clique or you can return Glen Elendra, Archmage back to hand to get rid of the -1/-1 counter and reuse her once more
During the Main Phase, if a monster(s) your opponent controls is sent to the GY: You can activate the following effect, based on where this card is at activation (but you can only use each effect of "Vouiburial, the Dragon Undertaker" once per turn)
I think thats a little too restrictive, as I lean more toward pilotable in the first definition
As Forsaken Crossroads enters the battlefield, choose a color
Monster cards Spell cards Trap cards Each type of card has its own unique categories
Though perhaps impractical due to the different type of energy required to make full use of an Amazing attack, these cards are pretty spectacular additions to a deck, both visually and in terms of their capabilities