Owen Grady, Raptor Trainer

If your Commander deck has two commanders, you can only include cards whose own color identities are also found in your commanders' combined color identities. If Blue, Loyal Raptor and Owen Grady, Raptor Trainer are your commanders, your deck may contain cards with green, blue, and/or red in their color identity, but not white or black.

An effect that checks whether you control your commander is satisfied if you control one or both of your two commanders.

Note that the target player searches their library (which may be affected by effects such as that of Stranglehold) and that the card they find is revealed, even though these words aren't included in the ability's reminder text.