Seriously, Clayman is one of the OG heroes. There is no excuse for only having one available. And to those saying you only need one because it’s “situational”, there are more available fusion options than there are Clayman, you cannot make any good deck with Clayman fusions in it unless you’re intent on a single fusion build and a crap ton of substitutes. #KONAMITRASH
Clayman's fusions suck anyway. Rampart Blaster (if it follows how it works in the OCG) and Infernal Sniper are OK. Thunder Giant's a worse Plasma Vice for the most part (and you should already be using Fusion Subs and Sparkman anyway). There isn't really a reason you need to use Clayman without Electrum being available anyway.
I remembered it, but it's just simply not worth using or even considering with a 5 (or even 15)-card Extra Deck. At least there is a slight reason to consider Rampart Blaster, even if she also sucks. Kinda sad, but the only fixed-material E-HERO Fusions worth using tend to be those using Wildheart or Sparkman.
Also I don't know if this is a coincidence or not, but Wildheart and Sparkman also happens to be the two best original main deck Elemental Heroes.
(Original as in used by Judai in the GX anime)
If you were using Jaden's 5 most used Fusions in Duel Links, only 1 of them would use Clayman anyway. (Thunder Giant.) Rampart Blaster would be #5, but isn't obtainable.
His top 10 most used fusions (from most to least), BTW: Flame Wingman, Thunder Giant, Shining Flare Wingman, Tempest, Rampart Blaster, Flare Neos, Mudballman, Wildedge, Mariner and then a 7-way tie for 10th. Was bored and checked