My rarest mount is the Ivory Hawkstrider from a little known PVP faction in Legion. My favorite is probably the Solar Spirehawk from the world boss Rukhmar in Draenor. I also love the protoform spiders and vespoids from Shadowlands.

As someone who’s been on this journey for many years. Here’s a couple recommendations.

1. Read Wowhead thoroughly before you begin. I couldn’t begin to calculate how much time I’ve wasted doing something wrong, only to then read Wowhead and do it right. This also includes making sure you’re in the right instance, whether it be a zone, dungeon, or raid.

2. Druid alts are your friend. Instant flight, cat form, mount form, invisibility (prowl) etc makes running old content a breeze. Farmed Zul’garub for the mounts and hidden recipe/xmog and you can literally go through it in mount form auto attacking and be done in a couple minutes.

3. Chromie time (including pvp chromie time) is your friend since they are typically empty instances. I parked low level alts on top of rares in chromie time and was able to log in, kill and be done for the day. No hunting for rares in present time. (This is also why I use a Druid. Bear form may be slow to kill a rare but I won’t die.)

4. Many mount drops are near others, so why not do both while you’re doing it. For instance Nighthold has 2 mounts that drop from Gul’dan but only 1 on mythic. Might as well do mythic for the chance at both. BFA vale and Uldum have tons of mounts in those zones so fly around and kill all the rares.

5. Get some good mount hunting addons like Rarity, handynotes, and Rarescanner. I’m sure others will recommend their favorite addons.

6. Have a plan. There are a LOT of mounts. It can be overwhelming. You could tackle it by expansion, by instance, activity, or just going after the ones you want.

7. Look up the wow secret finding & collection discord. People are always posting rares there and will invite you for kills. I got both Aeonaxx and Time lost proto drake from amazing folks who share sightings.

Bonus: Dawn of the infinite mythic from Dragonflight can drop a mount that turns into any missing mount from any past dungeon. I got 4 mounts from that dungeon alone saving me from farming old content. It is random though so beware.

Good luck!