I've excluded cards like Blightsteel Colossus or Progenitus that cant stay in the graveyard due to replacement effects, even though there are tricks that let you reanimate these creatures
Thankfully, the Orb of Dragonkind has no such downfalls due to its status as an artifact
This means that, given the kind of mana you will need to cast him, there is every chance you could cast a cheap spell before combat on your next turn to trigger the additional four +1/+1 counters, then activate his mana ability to double that to eight and have him be a 13/13
Koraidon's Dex entries are as follows: This seems to be the Winged King mentioned in an old expedition journal
Anyway, Tashas Hideous Laughter is the newest card on this list, and its not quite as good in Commander as in other formats, but its still pretty absurd
Understanding these prevalent strategies is key to successful play, whether you are building a new deck or looking to counter your opponents