Note: This cards name is likely a play on Internal Combustion Engine
Put a +1/+1 counter on each creature target player controls
Scarcity is the first reason and buyers who are willing to spend big bucks on collectibles are looking for trading cards in limited supply
The legal "Obelisk" and "Slifer" possess effects virtually identical to their video game effects, while the legal version of "Ra" has its effects severely weakened (it cannot be Special Summoned, does not gain ATK equal to the total ATK of the monsters Tributed for its Tribute Summon, and its Point-to-Point Transfer effect can only be used upon its Normal Summoning, thus limiting the player's choice and making it incompatible with its "Phoenix" effect)
At the beginning of your first main phase, if you both own and control Vanille and a creature named Fang, Fearless l'Cie, you may pay
Windy was catatonic when Ai found him