House Guildmage - Disable Activation Gem

jogamundo

If i happen to trigger the Blue activation of the House Guildmage more than once or if the first creature my opponent controls is already disabled it only disables the first creature again.

The wording of the ability says.
Disable the first nondisabled creature your opponent controls...

so it should be hitting the next nondisabled creature during each activation, please.