graded card covers GradedGuard PSA Slab Protector Case, Standard PSA Size, Impact Resistant TPU Holder, Drop & Scratch Proof Frame for Sports TCG Collectible Trading Cards. (Red) : Toys & Games Premium Protection for Graded Cards Standard TAG - Slabmags

You wont need to add Water-type Energy to the Melmetal & Greninja deck, as Greninja stays on the Bench and only applies chip damage with its Energy-free ability

Finally, there are special promo cards that tend to have different symbols based on the event theyre associated with

IMO it would be prob gone for 15k+

C Common Blue-Eyes Twin Burst Dragon X LIGHT Level 10 [ DragonFusionEffect ] ATK 3000 DEF 2500 "Blue-Eyes White Dragon" + "Blue-Eyes White Dragon" Must be either Fusion Summoned, or Special Summoned by sending the above monsters you control to the GY

And thus far the cEDH community doesn't seem overly impressed with Zenos, so K'rrik, Son of Yawgmoths as the top mono-black commander doesn't seem at risk