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[card]
name=Nirkana Revenant
auto={B}:1/1
auto=@tapped(swamp|mybattlefield): add{B}
text=Whenever you tap a Swamp for mana, add {B} to your mana pool (in addition to the mana the land produces). -- {B}, Nirkana Revenant gets +1/+1 until end of turn.
mana={4}{B}{B}
type=creature
subtype=Vampire Shade
power=4
toughness=4
[/card]
EDIT ABRA: Change title from require confirmation to crappy/borderline... will probably stay so for a while...