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'{3}: Search your library for a Sliver card, reveal that card, put it into your hand, then shuffle.
{3}: Gain control of target Sliver. (This effect lasts indefinitely.)
'All Sliver creatures have defender.
All Slivers have "When this permanent enters, draw a card."
'All Sliver creatures have "{2}: This creature gets +1/+0 until end of turn."