Once engulfed by the current, it would be hard to keep their bearing.
[CONT]: Sentinel (You may only have up to four cards with "[CONT]:Sentinel" in a deck.)
[AUTO](GC):When placed, [COST][discard a card from your hand], and one of your units cannot be hit until end of that battle.
[AUTO](VC):When placed, draw a card, and discard a card from your hand.