Surge's Spearow (lv 17) #84 - Lt
Stalking Vengeance and Immersurm Predator stack damage fast when creatures die and return
It doesnt have flash, but you can use cards like Vedalken Orrery or Quicksilver Amulet to get around that if you need to
8 Karn, Silver Golem The Original Colorless Commander For those looking to build a completely colorless artifact deck, Karn, Silver Golem is easily the most powerful option available, allowing you to fill your deck to the brim with the best utility artifacts in the game whilst still having access to a solid offense and defense
Guff Rewrites History has an inherently powerful effect, but I dont think it is going to replace Chaos Warp as a Commander staple
As for glossy, theyre not as glossy as Japanese Glossy vending/magazine promos, but still clearly different from regular cards