Boss event Paragon tierlist (w. Explanation)
S tier
Apex Plasma Master: By far the cheapest paragon to get, and easiest to get degree because of double crossbow master knowledge. Can breeze through Elite T3, and if the map has lots of walls it can breeze through literally everything. As if it couldn't get any better, hard counters blastpopoulos as well.
Goliath Doomship: Counter to literally every boss. Vortex stun? Global range. Phayze warp? Global range. Blastapopoulos rock? Global goddamn range. What about popcount? FF can earn millions of pops on T4 alone. Difficulty of Elite T5 literally depends on whether this paragon is banned or not.
A tier
Narvarch of Seas: If the map has lots of water and you've been boat farming hard, getting degree 60 is almost free. Only downside is that it steals too many pops because of auto-hook. But it's not problem on T5.
Master Builder: Surprisingly easier to build, and more powerful than people think. You're gonna get ultraboost and lots of overclock anyway for farming, and XXXL trap helps in both farming and popcount building.
It's staple of Elite T4 since it can reach maximium overclock by T5. Only weakness is Blastapopoulos since sentry attacks are plasma damage, but you can actually work around it with Ezili's heartstopper.
Ascended Shadow: Outstanding Phayze destroyer because of extra camo damage, and decent Vortex helper because of global range stickybomb and homing shurikens.
Like Navarch you can't really go wrong with this paragon except Blastapopoulos, since it burns stickybomb and destroys dps.
B tier
Nautic Siege Core: Though it lacks in every aspect compared to Navarch, the sole fact that it can reliably destroy V*rtex is what puts it in B tier. Also has a little upside of not stealing any pops when submerged. Just don't forget to unsubmerge it before boss because I make that mistake too often.
Crucible of Steel and Flame: Good damage, just outshadowed in efficiency by APM. Abilities are nice, so it's better when the event has ability cooldown reduction.
Glaive Dominus: Outshadowed in efficiency by APM and Crucible. But it has niche but certain use for Elite T3 in some advanced and expert maps, when bloons start coming out from complete different lane from boss.
C tier
Magus Perfectus: Mid base damage for its cost, bad range, and bad popcount buildup since all 3 paths lack in single target damage. It's too pathetic compared to Goliath Doomship in every aspect.
Single redeeming quality is its arcane metamorphosis ability that makes it have highest dps for certain duration which can be used for extreme time attack. It'd be better if not half of bosses had invulnerability frame...
S tier
Apex Plasma Master: By far the cheapest paragon to get, and easiest to get degree because of double crossbow master knowledge. Can breeze through Elite T3, and if the map has lots of walls it can breeze through literally everything. As if it couldn't get any better, hard counters blastpopoulos as well.
Goliath Doomship: Counter to literally every boss. Vortex stun? Global range. Phayze warp? Global range. Blastapopoulos rock? Global goddamn range. What about popcount? FF can earn millions of pops on T4 alone. Difficulty of Elite T5 literally depends on whether this paragon is banned or not.
A tier
Narvarch of Seas: If the map has lots of water and you've been boat farming hard, getting degree 60 is almost free. Only downside is that it steals too many pops because of auto-hook. But it's not problem on T5.
Master Builder: Surprisingly easier to build, and more powerful than people think. You're gonna get ultraboost and lots of overclock anyway for farming, and XXXL trap helps in both farming and popcount building.
It's staple of Elite T4 since it can reach maximium overclock by T5. Only weakness is Blastapopoulos since sentry attacks are plasma damage, but you can actually work around it with Ezili's heartstopper.
Ascended Shadow: Outstanding Phayze destroyer because of extra camo damage, and decent Vortex helper because of global range stickybomb and homing shurikens.
Like Navarch you can't really go wrong with this paragon except Blastapopoulos, since it burns stickybomb and destroys dps.
B tier
Nautic Siege Core: Though it lacks in every aspect compared to Navarch, the sole fact that it can reliably destroy V*rtex is what puts it in B tier. Also has a little upside of not stealing any pops when submerged. Just don't forget to unsubmerge it before boss because I make that mistake too often.
Crucible of Steel and Flame: Good damage, just outshadowed in efficiency by APM. Abilities are nice, so it's better when the event has ability cooldown reduction.
Glaive Dominus: Outshadowed in efficiency by APM and Crucible. But it has niche but certain use for Elite T3 in some advanced and expert maps, when bloons start coming out from complete different lane from boss.
C tier
Magus Perfectus: Mid base damage for its cost, bad range, and bad popcount buildup since all 3 paths lack in single target damage. It's too pathetic compared to Goliath Doomship in every aspect.
Single redeeming quality is its arcane metamorphosis ability that makes it have highest dps for certain duration which can be used for extreme time attack. It'd be better if not half of bosses had invulnerability frame...