OG Chandra does a pretty fair slow pyrotechnics impersonation
The first 5 walkers were pretty well designed. What has come after them though has really pushed me over the edge and turned me against this card type. If you look at the first 5, all of them had a really minor +1 ability - most of which you'd see as statics or activated abilities on artifacts/enchantments. Garruk was essentially a mana rock. Chandra pinged your opponent like sulfuric vortex. Jace was howling mine. Goldmane a little life. Lili's was the least fair, but she cost 5 mana and needed a gazillion turns to go ultimate. These things weren't stupidly powerful. The minus abilities weren't ridiculously good and most of the ultimates weren't either (Chandra and Lili aside - both the most expensive walkers and the hardest to trigger to try and offset this).
I just think since then they took the design and started pushing it to the moon. And it was right after that they (Wizards) decided to money grub and do the mythic rare thing. Not to mention the power creep explosion (gotta get em all)! I'm sorry, but all these decisions did was make the game more expensive for people. None of this was done with the players in mind. Wizards did the same thing with the D&D license. I dislike that company like I dislike Sony (and that's not at all a compliment). I'm just not a fan.