There is no “rarest” monster. They are all difficult to get. They also have ups and downs.
Snowja is a good monster, but a bane move or a Typhonwyrm using vengeance can crush it.
Now…Charcalynx involves more strategy, focusing on chipping away enemies at first, protecting and healing it, and then annihilating enemies.
Stegospike is too powerful atm…but he is great as a protector with Charca, along with barricadus and angelon.
Destructor is decent…risky though.
Subzeratops and Goldenhorn are very well-rounded. They can protect, and go all out and destroy. Subzeratop’s chain slow is very useful combined with haste-users and a heavy hitter. Also a good supporter for Charcalynx in barricadus’ place.
Anubis isn’t too good tbh…that’s just my opinion.
Minespider is the bomb…literally and figuratively. Useful to take out your strongest foes…but place him strategically so he doesn’t die.
Then there’s omegawyrm, other fused wyrms, and dreadwolf/tremorback. Great monsters.
If you don’t want sdread and tremor as last standers, Don Penguini works too…although I like to use his aftermath.
Vulcawolf is a good avenger, like the wyrms.
Pegasion…great opener, as Dark monsters are fairly common in openers. Besides, it’s send back can help you mold your team so you don’t begin with a huge disadvantage. It can save your heavy hitter after it goes, too.
Frillzeon is great with fire allies. A Goldenhorn+vulcawolf+frills won combo can take down four enemies in PVP easily…but if your opponent has a water monster…uh-oh.
Bloodclaw is great for single player…but it’ll get crushed in PvP. I don’t recommend it.
Astroleon is a nice holy monster, but Pegasion and Angelon are better strategically.
Infernowyrm should not be used in PVP in my opinion. It’ll die quickly. I’ve never had it last for a long time. It’s suicide…literally.
Vegitiger is the bane of all monsters…well, almost. It can take out massive HP from a single foe…a quick beastbane, vengeance, feud spear, armyflame, brash burst, etc would all crush it though.
Did I forget anything?
…oh yeah…ark wing is great to have in PVP. Nice damage, guaranteed S rank…
Necodrake and Plasmorex…again, very easy to kill.
Rooknight is one of the few stunners that don’t require death, AND can speed itself up, AND can strengthen itself. Pair it with Stegospike and Subzeratops and you’re good. Speed yourself up, protect your stunners, stun, slow enemies, stun, increase attack by a lot, crush foes.
