Nana

Indestructible, Reach, Shroud
Defender (This creature doesn't attack.)
Nana may block two creatures each combat.
{1}{t}, Search your library for an artifact, reveal it
and put into your hand then shuffle your library.
{1}{t}, Exile target permanent. That card returns
to its owner's hand at their next upkeep phase.
{2}{t}, Target attacking creature and its declared blockers are no longer attacking or blocking.