Garnet, The Answer

Shares intensity with Ruby & Sapphire.
Double Strike, Vigilance, Trample.
Garnet has +1/+1 equal to its intensity.
When Garnet enters the battlefield,
attacks, or blocks, Surveil 2, then you
may draw a card, then discard a card.
When Garnet leaves the battlefield, transform it.
Then you may return it to your library,
then shuffle.