Name:Basal Sliver
ManaCost:2 B
Types:Creature Sliver
PT:2/2
S:Mode$ Continuous | Affected$ Sliver | AddAbility$ Mana | Description$ All Slivers have "Sacrifice this permanent: Add {B}{B} to your mana pool."
SVar:Mana:AB$Mana | Cost$ Sac<1/CARDNAME> | Produced$ B | Amount$ 2 | SpellDescription$ Add {B}{B} to your mana pool.
SVar:RemAIDeck:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/basal_sliver.jpg
Oracle:All Slivers have "Sacrifice this permanent: Add {B}{B} to your mana pool."