There seems to be so many decent cards floating around the classic & basic sets that don't see much play. Or at least haven't since like 2014/2015
With the whole even/odd deck structures being introduced it's been cool to see at least some of these finally find temporary homes. It was so neat seeing odd pally run 3 neutral basic minions like sw champ, wolf rider, raid leader in the early witchwood meta. Hopefully with this upcoming rotation a number of these will be brought back!
I think a problem with many of them is they either don't really fit into a current deck or they're just too average. Like shattered sun cleric is an example of a card that's extremely OK
Examples
-Dark Iron Dwarf
-Scarlet Crusader
-Argent Protector
-Cruel Taskmaster
-Stormforged Axe
-Sword of Justice
-Cenarius
-tasdingo
-Ancient of War
-Shadow Bolt
-Arathi Weaponsmith
-Cult Master
-Hammer of Wrath
-Shattered Sun Cleric
-Temple Enforcer
-Worgen Infiltrator
-Earthen Ring Farseer
-Abomination
-Stranglethorn Tiger
-Cleave
-Starfire
-Multi Shot
-Assassins Blade
-Arcane Explosion
-Holy Nova