Wizard Isidor is a teleport specialist located on the 1st2nd floor[UK] of the Wizards' Tower. His work with magic has affected his memory, leaving him incapable of remembering things like incantations, often having to be reminded. He is an acquaintance of Explorer Jack. Isidor featured in the 2011 Christmas event and its return in 2016.
He can teleport adventurers to the Land of Snow once he is reminded of the spell Ectosum glissendo, though he refuses to allow anybody through with a sled due his phobia. He is the inventor of the snow emitter, a portal-based magical device that sucks moisture from the air then freezes it in an arctic plane. He used the device when the Wizards' Tower held A Towering Feast to make the tower's basement, the location of the feast, more festive by covering it in snow.
His examine text during A Towering Feast is a reference to the game Portal.
^Wizard Isidor, "Rune Mysteries", RuneScape. "The beam acts as an anchor for all our teleportation spells, so as a teleportation specialist I'm sensitive to any fluctuations."
^ abExplorer Jack, "Myths of the White Lands", RuneScape. "I have an acquaintance who now lives in the Wizards' Tower. He's called Isidor. He'll take you there as long as you give him the teleport phrase, but you'll have to remind him everytime. The poor chap has a memory like a sieve! That's what you get for experimenting with magic all day, eh?"
^Wizard Isidor, "Myths of the White Lands", RuneScape. "I've a phobia of sleds, you see. If I were to teleport you with one, who know where you'd end up?"
^Wizard Isidor, "2011 Christmas Event", RuneScape. "To help you I have created a device called a snow emitter, it takes all the moisture in the air and sucks it through a portal to an arctic plane."
^Archmage Sedridor, "2011 Christmas Event", RuneScape. "Isidor told me that he needs help making the basement more festive with snow. He mentioned a new device of his that explodes placing snow everywhere."
^Wizard Isidor, "2016 Christmas event", RuneScape. "But I've never been good with enchanting spells. You might want to ask someone else!"