Excalibur by Tini Howard Vol. 4
The tower and the storm! Captain Britain and Excalibur have reunited at last, and Otherworld is their new domain. But a new mission is about to reveal deep political unrest among Saturnyne's court, and a brutal sacrifice will bear bitter fruit! As guardians of the gate, the members of Excalibur have sworn to safely escort those who quest to the realm beyond. But when Doom returns to Avalon, they will soon find those duties tested to their very limits. And the ten kingdoms of Otherworld must decide: Are the members of Excalibur heroes to be celebrated, or witchbreed to be put to the stake? The one true king returns and fantasy gives way to crushing reality as Tini Howard's mystical mutant saga continues!
Collecting EXCALIBUR (2019) #22-26.