The very awesome easter bunny summon and his pall tiny gnomie are stalking players all over Krynn.
Even when the character does not even have the summon scrolls, one of them might appear out of nowhere. Bunnies seem to have stopped doing this, but the epic paladin has appeared several times in a row.
For me this has usually occured while using traveling servises, especially on ships. Also, when a new player logs in it sometimes triggers the summon for the other players.
And couple of times the summon does not need any specific reason to join the party, but is usually stuck on a wall somewhere and cannot be reached. It appears on screen when the player moves to a new area, tagging along and spawning high level enemies. Not nice for low lever toons.