Mega Charizard X EX has 220 HP, and for three Fire energy, its Raging Blaze attack deals a base 100 damage, plus an additional 80 damage if its HP is down to half or less
Rather than rank the individual decks against each other, I compare each years releases
Throw in some ramp, a bunch of Hydras, and some interaction/support and you'll be good to go
So, when it comes down to it, Juzam Djinn has the most powerful ability of them all: it secretly has the nostalgic keyword, giving it a massive buff to its value
Might be worth noting Grim Return - Cute, especially with ETB effects Force of Despair - Interact while tapped out Dash Hopes - How has this been playing for you
When this scheme's ability resolves, the next opponent in turn order chooses a nonland permanent (or three nonland permanents) they control to sacrifice