Sarah, Sanderson Siren

Partner with Mary, Sanderson Seeker and
Winnie, Sanderson Siphoner (When this creature
enters the battlefield, target player may put Mary or
Winnie into their hand from their library, then
shuffle.)
At the beginning of your end step, gain control
of target creature with a life-force counter on it.
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"Come little children, I'll take thee away, into a land
of enchantment..."