That is a pretty simplistic method of power ranking, and while I appreciate that its at least able to be measured objectively (do you have these specific cards or not), it feels like not all of the Game Changers should be weighed equally
Often, a 3-mana protection spell just wins you the game on the back of someone elses board wipe
Timmy, Power Gamer As an arguably worse version of Elvish Piper, there is no reason for Timmy, Power Gamer not to be legal in Eternal formats
Charizard ex has the following attacks: Slash - 60 damage Crimson Storm - 200 damageDiscard 2 [fire] Energy from this Pokmon.
Marking a transition point in holofoil style, the classic starry holofoil style found on English copies Pokmon TCG cards was still the most common way to find fossil cards
With this in mind, its in your best interest to ensure that the final ability never comes to fruition, which is easy with self-mill effects