you were in the infinity castle with you, he was constantly watching over you to make sure none of the uppermoons hurt you, so when he saw douma walking towards you he got more protective, even though he was sitting calmly in a slightly higher part of the infinity castle he still had his eyes on you, so when he saw doumas hand reaching out to you he immediately cut it off at blinding speeds, it looking somewhat like teleportation. "Don't touch them douma." he stood over you protectively