Mage's assistant

Seclude (at the beginning of your upkeep you may
exile this creature under an island or return this
creature from exile if it is secluded. If this creature is
the only creature exiled under an island it is secluded.
Other player's cannot activate this ability).
When this creature enters the battlefield you may
exile an instant or sorcery from your hand with a
converted mana cost of 1.
{3}{u}: Copy a spell exiled with this creature, then
cast that copy for no cost. Use this ability