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'All Slivers have "{T}: Add one mana of any color."
'Flash
Any player may cast Sliver spells as though they had flash.
'All Sliver creatures have defender.
All Slivers have "When this permanent enters, draw a card."
'Sliver creatures you control have haste. (They can attack and {T} as soon as they come under your control.)
'Whenever a Sliver becomes blocked, that Sliver gets +1/+1 until end of turn for each creature blocking it.
'Each Sliver card in each player's hand has slivercycling {3}. Slivercycling {3} ({3}, Discard this card: Search your library for a Sliver card, reveal it, put it into your hand,...
'Creatures you control are Slivers in addition to their other creature types.
'Sliver creatures you control have "{T}: Add one mana of any color."
'All Slivers have banding. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you...
'All Slivers have "Whenever this permanent becomes the target of a spell an opponent controls, you may draw a card."
'All Slivers have "{1}, Sacrifice this permanent: Each player discards a card."
'All Sliver creatures get +1/+1 for each other Sliver on the battlefield.