I am ignoring Conflux since the town is ridiculous. List goes from best to worst.
Lvl 7:
Black dragon
Immunity to all spells combines very nicely with the powerful warlock heroes, Armageddon away! Black dragons do generally loose to the other level 7 monsters due to the inability to buff them with defensive spells or ressurect them.
Archangel
Best stats and a fairly useful ressurection ability. The plus morale ability is also very good, and means that Castle troops is the most suited to reinforce an undead army!
Titan
Best shooter in the game which gives it a strategic advantage. It also beats around half of the lvl7 upgrades in melee combat!
Gold dragon
Almost equal to the black dragon...except that rampart towns don't get Armageddon very often and their heroes are ill-suited for casting it.
Archdevil
High speed, no retaliation, so far so good....But the low HP really hurts the unit and makes it very vulnerable to damage spells.
Ancient behemoth
Most damaging unit in the game, it is pretty slow and has no immunities which means that it often just never gets into action :/
Ghost dragon
Weakest lvl7 unit in the game, weaker than the hydra. But, undead is a powerful "ability", it flies, it is much faster. And most importantly, you can create bone dragons by shoving hydra's and dragons into the skeleton transformer!
They also have an awesome trigger which always trigger in the most useless situations, unless they are used against you -_-
Chaos hydra
Slowest lvl7 unit, weak stats. Only saving grace is it's great ability to hit all units around it.
Lvl 6:
Dread knight
Higher speed and undead makes it more useful than the more powerful naga queen.
Naga queen
Beats every lvl 6 unit in a straight fight.
Efreet sultan
High speed and immunity to fire makes it very useful, more so than the more powerful champion.
Champion
All-over just a solid unit.
War unicorn
It is so cheap that i almost considered putting it above the champion.
Scorpicore
Is it a bird? Is it a plane? No! it's a mediocre flying lvl6 unit.
Cyclop king
Well, at least it shoots i guess. Looses to most units.
Wyvern Monarch
They are cheap...and you could potentially get them out turn 3...If you are either playing on a low difficulty or if you are just plain lucky.
Lvl 5:
Power lich
Undead + ranged AoE attack makes them more useful than the more powerful mighty gorgon.
Mighty gorgon
Tanky and death stare is just plain awesome.
Minotaur king
Just a solid unit. They can never have poor morale, which means that your undead army can safely pick these guys up.
Zealot
Decent shooter...but not really better than lvl 4 archmages.
Thunderbird
Fast and powerful, special ability rarely seems to trigger.
Master genie
Can buff your units, is also fairly fast and damaging. Very fragile.
Pit lord
I never found demon farming to be worth the effort. How useful they are to you depends entirely on if you consider demon farming a meaningful way to spend your time.
Dendroid
Good at protecting ranged units, keeping lvl 7 units in place. But they are too slow to really impact most battles.
Lvl 4:
Archmage
So many great abilities, no melee penalty, they do not suffer from shooting over castle walls and they make your spells cheaper. Third best ranged unit, after liches and titans.
Crusader
Insane damage for a lvl 4 unit. One of the most impact full unit in the game.
Vampire lord
This requires some explanation i think. Very powerful unit. The problem lies in their low damage which means that sometimes they just don't impact the fight very much. Extremely useful for non-hero battles. Cleans dragon cities fairly easily.
Medusa queen
Good shoter, useful in melee too!
Silver pegasi
Fast but squishy.
Ogre magi
Pretty tough unit, but too slow to really be useful.
Greater Basilisk
Well, at least it is tanky.
Horned demon
Can be massed with demon farming strategy, otherwise fairly weak.
Lvl 3:
Royal griffin
Great unit! Shield them and send them over town walls, with ressurection they can often clean everything up alone. Only lvl 3 unit that requires a lvl 4 unit spawner.
Evil eye
No melee penalty makes them more useful than grand elves in my experience.
Grand elf
Great damage, very squishy and completely useless in melee.
Cerberus
Good speed combined with AoE attack makes them very useful.
Dragon fly
High speed and dispel ability makes them fairly useful.
Iron golem
Too slow and can't be ressurected. Otherwise a fine unit.
Wraith
I rarely bother purchasing the building. Not very useful.
Orc chieftain
I once had a discussion with a friend regarding the weakest level 2 unit, and he mentioned these guys. Just plain weak.
Lvl 2:
Wolf raider
Good speed and damage, they are fairly squishy though. I recommend drawing the retaliation with a different unit before attacking with these guys.
Marksmen
Good damage and over-all a useful unit.
Harpy hag
Strike and return combined with no retaliation makes these guys very useful in siege combat.
Magog
Vastly underrated, AoE attack makes them very useful.
Battle dwarf
Tanky, but too slow to impact a lot of fights.
Obsidian gargoyle
Their great speed makes them good at blocking the town gates which can be quite the advantage for a tower army. I often use them with tactics to wall my shooters in. Even a single obsidian gargoyle might just give your titans an additional attack before being blocked by melee units/fliers.
Lizard warrior
Weak damage, squishy unit. Get's dangerous once they reach 1000's.
Zombie
I rarely bother purchasing these guys.
Lvl 1:
Skeleton
First and only un-upgraded unit to make the list. You can reach thousands of these guys with isra/vidomina which makes them the most useful lvl1 unit in my experience.
Centaur captain
Great unit! Useful from start to end.
Halberdier
Can be worth purchasing later in the game, but rarely makes the cut. Great stats and over all a very strong unit for the early-mid game.
Master gremlin
Being ranged means that they are useful for the late game, unlike most lvl1 units.
Gnoll maradeur
Pretty average.
Hobgoblin
High speed makes them a bit more useful than troglodytes.
Troglodyte
Cannot be blinded. But who in their right mind would blind these guys anyway.
Familiar
Bad stats, except for speed. Not very useful.
Agree or disagree?
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