Well I like plenty of abilitys, but instead of doing a very long list, I will keep it to one abiliy per class.
Druid One clear winner https://classic.wowhead.com/spell=24858/moonkin-form. Yes its a bit niche and all, but the dance is awesome and its nice to hear that "Battlecruiser operational" even in WoW. Aura is decent too
Hunter I never played one past lvl10, so I just go with what I notice: https://classic.wowhead.com/spell=5384/feign-death is pretty awesome and can save you tons of gold later. Also, if you were going full huntard again it can save 40 persons some time...
Mage https://classic.wowhead.com/spell=11366/pyroblast A fireball? But bigger? With dot component? Sign me up! Pyroblast is sooo satisfying to watch and the sound is nice too
Paladin first I wanted to be mean to the bananadins with picking flash heal, but https://classic.wowhead.com/spell=25898 ... g-of-kings is my favorite blessing and its quite good!
Priest many people forget about it, but for me its one of the main reason to play a priest: https://classic.wowhead.com/spell=605/mind-control
Shaman nothing beats the https://classic.wowhead.com/spell=8177/grounding-totem but because totems count half, and talents too I have to pick https://classic.wowhead.com/spell=16188 ... -swiftness, had it in every shaman build ever!
Rogue As a sworn dagger rogue player, this one is easy: https://classic.wowhead.com/spell=53/backstab
Warlock really hard to pick one, but I go with https://classic.wowhead.com/spell=1949/hellfire
Warrior https://classic.wowhead.com/spell=100/charge love that one, best initiation in the game!
Sap. Sap mobs in dungeons, make yourself feel useful. Sap awkwardly placed mobs when you're levelling, letting you skip through areas with ease. Sap flag carriers as they try cross the BG, watching them and their teammates rage AoE spam as your team closes in. Sap passing mounted players, giving them a few seconds of dread before you open on them. Sap people and steal their node. Sap people before they're about to get on a boat and giggle as it leaves without them. Chain sap people as they're levelling, driving them insane.
If I roll hunter, I'll miss sap. Freezing trap might work the same in some situations, but it's more fun if they can't see you.
Always envied priests and hunters for https://classic.wowhead.com/spell=10909/mind-vision and https://classic.wowhead.com/spell=1002/ ... -the-beast.
Disarm! It's not really a flashy skill, but I remember liking in PVP when I saw a paladin/warrior/rogue with a glowing weapon and knowing I could shut down their offense for a few seconds. (I also made sure to keep a weapon chain on at all times in case that reminded a warrior they could do the same back to me)
https://classic.wowhead.com/spell=17364/stormstrike is a favorite of mine - getting a whole extra melee attack to use at the end of the enhancement tree felt great, and it was very satisfying to use.
Lots of utility in pvp and pve, and unique
Probably Blizzard. I remember on my first character (human rogue) I was questing in Redridge with a guildie. I was so envious of his AOE ability. That's one of the reasons my first character in Classic will be a mage.
Mind Control ofcourse :)
Blink. I still randomly daydream about how convenient that would be IRL.
https://classic.wowhead.com/spell=16362/windfury-weapon for sure! Hours of slow Auto attack were so worth it when you basically one-hit an Ally in PvP suddenly
I remember I had a thing for going around capital cities as https://classic.wowhead.com/spell=126/eye-of-kilrogg and freaking people out haha. Also, popping up a https://classic.wowhead.com/spell=706/demon-armor always felt badass to me.
it's so cool! also the hammer who falls from the sky is also cool.
I can't recall the name the one the paladin has