Hello, 

I like the possibility that Mordekainen's faithfull hound in combination with Wall of Force means a slow but continuous death of an enemy.

But now these are 2 spells that can only be used by wizards.

But without 2 levels as a fighter I don't get 2 actions per turn and my DM always moves the enemy away from my dog. 

Is there any way (alone) to cast these 2 spells in ONE turn?

There is also no 2nd wizard that could help.

As a wizard you can have them both active at one time. Cast the hound first and it lasts 8 hours with no concentration. This leaves you the capacity to cast any other spell after that. Just not at the same time or n the same round.

But no you can not cast them at the same time.

Why would you want to do this in the middle of combat? It's incredibly boring. Do you really want to sit there and roll 10 rounds of attacks for your hound most of which are going to miss, and those that hit are doing very little damage?

If you're into torturing enemies you capture you could do it there. But otherwise, it seems like mostly a waste of time.

The combo does give some options in combat but you have to be 8th level or higher to cast those spells.

By that time you have a lot more options to kill or just slow down the enemy.

Without a fighter 2 dip for action surge, there is no way to cast two these two spells in a single turn. There can be specific workarounds like combining spell gems, glyph of warding and time stop, but honestly it's not worth the effort, give the other options you can do instead. 

But if you really want to combine these, try Hold Person/Monster, or Earthen Grasp or basically anything that removes movement. Then, cast the Hound, and if they still haven't saved against the hold, cast the wall of force.

Or just use forcecage instead: use the cage option, and next turn cast the hound into the cage with the enemy. As long as the enemy can't escape from the cage, it'll work. Although frankly, other spells will do better than the hound, like sickening radiance.

Or polymorph them into a turtle or something you can easily just grab, then set up hound, drop creature, cast wall.

Quote from Cyb3rM1nd >>

But if you really want to combine these, try Hold Person/Monster, or Earthen Grasp or basically anything that removes movement. Then, cast the Hound, and if they still haven't saved against the hold, cast the wall of force.

Or polymorph them into a turtle or something you can easily just grab, then set up hound, drop creature, cast wall.

 These just again raise the question of why? If you can get the monster to fail a saving throw, and you can cast 4th and 5th level spells then you've already beaten them, Hold Monster for 2 rounds + any competent melee character = dead enemy. A successful polymorph, means you can just hold them underwater or cover them with a pillow to suffocate them to death = dead enemy. 

Quote from Agilemind >>

Quote from Cyb3rM1nd >>

But if you really want to combine these, try Hold Person/Monster, or Earthen Grasp or basically anything that removes movement. Then, cast the Hound, and if they still haven't saved against the hold, cast the wall of force.

Or polymorph them into a turtle or something you can easily just grab, then set up hound, drop creature, cast wall.

 These just again raise the question of why? If you can get the monster to fail a saving throw, and you can cast 4th and 5th level spells then you've already beaten them, Hold Monster for 2 rounds + any competent melee character = dead enemy. A successful polymorph, means you can just hold them underwater or cover them with a pillow to suffocate them to death = dead enemy. 

 
Because sometimes you do things because it seems fun, rather than optimal.

Why don't you cast Wall of Force first? This doesn't solve the cast-two-spells-in-one-round problem, but it keeps the target in place long enough for you to drop the Hound on your next turn.

Because the wall blocks line of effect.

Quote from 6thLyranGuard >>

Because the wall blocks line of effect.

... Does it? Why? All I see in the Wall of Force description is that "nothing can physically pass through the wall", and Faithful Hound can be placed in "an unoccupied space you can see within range".

Since the Wall is invisible, I don't see why you couldn't cast any spell that originates from "a space you can see within range" through the wall.

EDIT: Okay I've reread the spellcasting rules and I think I see the general principle here: we're saying that Wall of Force provides Total Cover even though you can see through it. I guess that makes sense; even though the Total Cover rules indicate a target must be "concealed", the Wall of Force is clearly "an obstacle" per the spellcasting rules, so I can buy that it should block spells unless otherwise specified. I'm going to leave this here because I think this is a pretty easy mistake to make if you're not familiar with the rulings on Wall of Force specifically.

Only spells that require a target or have an Area of ​​Effect are blocked by Wall of Force. The spell Faithful Hound does not require a target and is not an Area of ​​Effect.

Quote from Patdandd555 >>

Only spells that require a target or have an Area of ​​Effect are blocked by Wall of Force. The spell Faithful Hound does not require a target and is not an Area of ​​Effect.

 
The target of the spell is the space you can see within range. 

you right.

Since this thread got necro'ed and I've now seen it for the first time, this would be a great tactic for a BBEG tired of having their monologues interrupted