Star Spawn of Cthulhu

Flying, Life link
Other Horrors you control have Thoughtlink.
{t}{u}{u}{b}{b}, Sacrifice Star Spawn: Thoughtgrasp
4. (Target opponent reveals their hand, then you
choose 4 cards from either that hand or the top of that
opponent's deck. Put these into your hand. You may
cast them as if mana in their cost was mana of any
color. If you control any creatures with Thoughtlink,
you get to choose an additional card for each of them.)