The Crystal Gems

This card gains additional abilities depending
on how many 'Gem' cards you control:
1: Your 'Gem' cards have "You may shuffle this
card into your library if it leaves the battlefield."
2: Your 'Gem' cards have "{t}: Add {e}."
3: Your 'Gem' cards generate an additional
mana and energy.
4+: Creatures you control get +1/+1 for each
'Gem' card you own under your control.
(Gem cards are this card and the 5 mana rocks:
Diamond, Crystal, and Obelisk.)