If that range isn't enough to impress you, Atraxa happens to have plenty of other tasty keywords
The Secret Lair was vital for fans looking to build a complete Doctor Who deck, as The Fourteenth Doctor is four colors, all of them but black, letting you use all the various Doctors in a single deck while keeping the Doctor Who theme
Thirdly and finally, just using Rattleclaw as a Grizzly Bear some of the time is okay too
Archon of Cruelty If you want to reanimate, Sneak Attack, and otherwise cheat a creature into play, Archon of Cruelty is often one of your best options due to the overwhelming advantage of eating your opponents board, providing immense card advantage, and pressuring life totals
However, he also traded a slightly less mint version of the same card as part of the deal, and that card was worth about $1,275,000, ergo the $5,275,000 price