Crystalline Sliver [Friday Night Magic 2003] Theros its controller adds one mana

its controller adds one mana of any type that land produced

Set: Unlimited Edition Type: Creature — Elemental Rare Cost: {2}{G}{G}{G}{G} Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking

If it's a creature

Sacrifice Verdant Catacombs: Search your library for a Swamp or Forest card

Crystalline Sliver [Friday Night Magic 2003] Theros its controller adds one manaSet: Friday Night Magic 2003 Type: Creature Sliver Rare Cost: {W}{U} All Slivers have shroud. (They can't be the targets of spells or abilities.) Bred as living shields, these slivers have proven unruly they know they cannot be caught.