Mason, Lost Artificer

When Mason, Lost Artificer enters the battlefield
or becomes tapped, you may pay {1}; if you do,
he Explores; otherwise, Investigate.
Non creature artifact and non creature
enchantment spells you cast have Convoke.
{t}, {1}{u/b}{w/b}{w/u}, Sacrifice an artifact: Return an
artifact or enchantment from your graveyard
to your hand.