Does Weak affect conjurations? I couldn't find anything in the rules supplement. The text for Weak reads:

This is a poison condition which weakens a creature.
For each Weak condition on it, the creature loses 1
attack die from all non-spell attacks it makes. Cannot
reduce an attack to zero dice. Has no effect on damage
barriers or attack spells. Weak has a removal cost
of 2.

On one hand, it specifically refers to creatures. On the other hand, all of the other conditions that do not affect conjurations very explicitly state that they have no effect on conjurations, which this does not do.

This is relevant for Corrosive Orchid and Nightshade Lotus, which are living conjurations with non-spell attacks.

You discard them. All markers that were on a card are lost when it is reanimated.

Why Johktari (as opposed to Straywood)? The Straywood Beastmaster can quickcast the bats, whereas the Johktari needs a full action, so what does the Johktari bring to the table? You have no ranged weapons (so the ranged +1 trait is useless) nor a spawnpoint (so Fast is offset by the need to stay in place when summoning). Is wounded Prey really better than Melee +1, Pet, and quick summoning?

Also, if you are trying to kill with poison, it seems to me that armor is kind of irrelevant.

What is your plan to deal with a necromancer?

I assume you mean Hurl ROCK is used to turn off defenses; Hurl Boulder would be a waste.

Magma golem will be super powerful with the adramelech warlock against creature heavy builds. With adramelch's torment, moving burns, adramelech's touch...

Of course, it will not last very long if it has too many burns. More than ~3 and your opponent will likely take in down in 1 round. It requires a careful balancing act to keep it alive and dangerous.

A Tanglevine on the golem or Mongoose Agility on the Falcons can can reduce the guard effectiveness of the golems to 0.

Mongoose Agility is inefficient, since you don't want to be enchanting swarm creatures. Tanglevine is definitely the way to go.

I suppose the first question is: what does the forcemaster bring to the table here that you couldn't get from another mage (in particular, a wizard)?

The idea of a long-game oriented forcemaster is interesting, but it needs to be something that can only be done using the forcemaster.

Of the cards you have there, [mwcard=FWE01]Charm[/mwcard], [mwcard=FWE05]Forcefield[/mwcard], [mwcard=FWE07]Mind Control[/mwcard], and [mwcard=FWQ04]Galvitar, Force Blade[/mwcard] are really the only ones unique to the Forcemaster, and none of them really scream 'long game'. Upkeep costs cripple you in the long run, and Orb/Obelisk will be destroyed in a long game, after which your opponent can overpower you.

If you do intend to mind control all your enemy's creatures (definitely an intriguing idea, with the wardstones), you will likely need more than 1 mind control.

I think a wardstone-enhanced forcemaster is a great idea, since the forcemaster has some of the most powerful (if expensive) enchantments. If you want to go this route, you should add more copies of impressive enchantments like charm and mind control. Also, if you plan on a long game, drop the Invisible Stalker and add some thoughtspores instead. You can protect them with one-off enchantments like block/reverse attack/brace yourself. Sleep is another great spell to stock up on.

[mwcard=MW1J17]Pentagram[/mwcard] does not make attacks. A zone attack would give mana for each creature, though (up to max. +2 mana)

Training in all Level 1 Schools seemed like an interesting idea, but it's actually boring (many tough choices, or splashing is removed).

A limited (per-game) pre-paring a spell from your discard pile? Or returning a spell from your discard to your spell book?

You mean like this? Not Bard themed, but similar mechanics...