Crest Riders

You and up to ten willing creatures you can see within range assume a liquid form for the duration, appearing as waves on the surface of a body of water. While in this wave form, a creature has a travelling speed of 300 feet and has resistance to damage from nonmagical weapons. The only actions a creature can take in this form are the Dash action or to revert to its normal form. Reverting takes 1 minute, during which time a creature is incapacitated and can't move. Until the spell ends, a creature can revert to wave form, which also requires the 1-minute transformation.