You may play that card for as long as it remains exiled, and mana of any type can be spent to cast it
Thankfully, other printings make it clear that its a Legendary Enchantment that exiles opponents creatures and brings them back under your control, with additional counters on them
Welcoming Vampire In addition to being a great source of card draw, [c]Welcoming Vampire[/c] has decent stats for its cost
As far as I can see, there's no simple way to exclude the back faces of cards without excluding entire editions they appear in, or excluding their names one by one
This leads me to believe that Amethyst is the best Ink color in the game simply because its the only one that offers numerous ways to draw cards and cycle through your deck
There will be times where it is big for sure, but a two drop that you probably cant play on turn two isnt exactly ideal, and the upside is still just a large vanilla creature