So I saw this card amplifire and was thinking of a red elemental deck. Then I remembered that Grenzo, Dungeon Warden interacts nicely with this card and has black to search it up. I was thinking play amplifire either roll into Malignus or pull Flamekin Harbinger and then get it back with Grenzo, Dungeon Warden. additionally Soulbright Flamekin gives a trample outlet with a couple other red instants.
So I was just double checking that Malignus holds its power and toughness in all zones letting amplifire set up for a one shot. Additionally I was wondering if there were any other suggestions.
208.2. Some creature cards have power and/or toughness represented by a * instead of a number. The object has a characteristic-defining ability that sets its power and/or toughness according to some stated condition. This ability functions everywhere, even outside the game. If the ability needs to use a number that can't be determined, use 0 instead of that number.