All Slivers have "{T}: Add one mana of any color."

Changeling (This card is every creature type.) When Masked Vandal enters the battlefield, you may exile a creature card from your graveyard. If you do, exile target artifact or enchantment an opponent controls.

All Sliver creatures get +1/+1.

All Sliver creatures get +0/+1.

Sliver creatures you control get +1/+1.

All Sliver creatures have shadow. (They can block or be blocked by only creatures with shadow.)

All Sliver creatures have flanking. (Whenever a creature without flanking blocks a Sliver, the blocking creature gets -1/-1 until end of turn.)

({T}: Add {G}.)

Choose a creature type. Draw a card for each permanent you control of that type.