Sakastra God of Fortune

Indestructible
Artifacts you control have hexproof.
When Sakastra God of Fortune enters the battlefield gain control of target artifact.
{t}{u/b}{u/b} Search any library for an artifact card with mana value 3 or less and exile it. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any type to cast that spell.