Navz, Artist of Artifice

Whenever an artifact enters the battlefield
under your control, put a +1/+1 counter on
Navz, Artist of Artifice.
{1}{r}: Put an artifact card from your hand onto
the battlefield. It gains haste until the end of
turn. Sacrifice it at the beginning of your next
end step.
{1}{u},{t}: Return target nonland permanent to
its owner's hand.