Fatima, Master of Puppets

All Constructs gain +1/+1 for each Construct
that enters the battlefield under your control.
{w}{u}: Return a Construct to your hand.
You may place a card from your hand to the top
of your library or return an exiled Construct
to the top of you library.
{b}{r}{w}{t}: Exile a Construct from your graveyard.
Gain control of target creature or planeswalker
until end of turn.
{u}{b}: Draw a card/Discard a card.