This is true even if the ability states that must be paid with a certain color of mana, as Crimson Hellkite's ability does
On his own, he's just a red and black creature costing four mana with three power and two toughness - not all that impressive
(To proliferate, choose any number of permanents and/or players, then give each another counter of each kind already there.) The value of X is determined only once, as Tromell's last ability resolves
The Eye of Timaeus , The Fang of Critias , and The Claw of Hermos are well-loved by Duelists everywhere for their ability to Fusion Summon a wide variety of unique monsters using only one material
Realmbreaker, the Invasion Tree was a key part of the New Phyrexian invasion of the Multiverse during March of the Machine , and it got itself a pretty long name too
In Pokemon TCG Pocket, it appears as a Basic Pokemon with 70HP and a bite that will leave your opponent struggling to get their Pokemon ready for battle