I lost the game because I wasn’t given priority to activate Skrelv’s protection ability to protect my Aclazotz after my opponent used Light Paws’ triggered ability to grab a Sheltered By Ghosts from their deck after casting Sage’s Reverie from their hand. Once my Aclazotz was exiled, I was THEN given priority to use Skrelv’s ability to protect one of my other creatures, but at that point it was too late, as Aclazotz was my only flyer.