The type “Illusion” is printed on the card’s type line purely for flavor. The Ultimus has every other creature type as well.
25-09-2006
wotc
Like any creature, if Mistform Ultimus becomes another type as the result of a spell or ability, it will lose all its other creature types.
25-09-2006
wotc
Mistform Ultimus has all creature types even if an effect removes its ability. Type-changing static abilities will apply in layer 4 before effects such as Sudden Spoiling’s remove them in layer 6.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.