
Blue creatures you control can't be blocked.
Deepchannel Mentor has 2 printings, first in Shadowmoor (2008). EDHREC ranks it #9,774 among Commander cards. It appears most in Hakbal of the Surging Soul decks (3,363 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.