Glaring Ignus

Saboteur (You may have this creature enter the battlefield under an opponent's control. If a player other than this creature's owner would sacrifice it, instead its owner gains control of it.)
If you control but don't own this creature, you can't cast spells from your hand unless directed to do so by a spell or ability.
{2}: Reveal a card at random from your hand. You may cast that card. If you do, it costs {2} less to cast. Activate only at sorcery speed.