When you do, return target creature card with mana value X or less from your graveyard to the battlefield, where X is the amount of life you gained this turn
The problem is that Un-sets tend to rely heavily on inside jokes and references to old cards that many new players probably won't understand
If the game plan is going as you want, mana shouldnt be the restriction, and this doesnt do anything to get you back ahead when you are behind
I believe this is valid because silver border, now acorn, gives the entire team, design, play, world building, art direction, marketing and everything in between, artists, players, and article writers a chance to go out to the very edges of what the game could do
Neva, Stalked by Nightmares Neva, Stalked by Nightmares has the potential to get a good number of counters in a sacrifice deck that includes lots of enchantment creatures and/or auras
The Arboretum runs the three Treefolk that have X/X with X your Forest type and we have closers like Multani and such there