Quote from TheVikingKing >>

1200ft if you use the sorcerer's meta magic

Quote from Gay_Dog >>

Fun fact: if you take both the Spell Sniper feat, and the warlock invocation Eldritch Spear, this cantrip can have a total range of 600 feet.

I assume it would mean that you could reasonably hit any enemy you could see during a combat encounter, not counting cover and other obstructions, but to be honest there isn't much of a point in my experience since I could normally do that with 300 feet. Maybe my encounters are just smaller-scope?

I would expect a DM to impose Disadvantage at that range, or something similarly penalizing. That's almost 2 full football fields. Perspective is thrown off. Now if it was an auto hit, or save to avoid, sure. You are still making a ranged attack roll though with EB.

One fellow I've seen on a forum talked about how there was a lot of naval action in his game, he had a similar setup and his Warlock was basically a sniper in the ships crows nest during naval combat.

awesome. 

Quote from Whynot2 >>

I would expect a DM to impose Disadvantage at that range, or something similarly penalizing. That's almost 2 full football fields. Perspective is thrown off. Now if it was an auto hit, or save to avoid, sure. You are still making a ranged attack roll though with EB.

Well, that would be wrong to do.  Both the Eldritch Spear invocation and the Spellsniper feat are designed to allow you to attack over long range, and spells don't have a Short/Long range.  Imposing disadvantage on that is a huge, and rude, nerf.  If a player wants to spend an entire Feat and Invocation on increasing the range of Eldritch Blast, they should be allowed to do so.

As for @Nereze's question of "can you even see 600 feet away?"
Sure you can, given the right conditions.  You can see for miles on end, in clear conditions with high ground/flat land.  There are spells with much greater range than this, such as Meteor Swarm.

Quote from Jaysburn >>

Quote from Whynot2 >>

I would expect a DM to impose Disadvantage at that range, or something similarly penalizing. That's almost 2 full football fields. Perspective is thrown off. Now if it was an auto hit, or save to avoid, sure. You are still making a ranged attack roll though with EB.

 

Well, that would be wrong to do.  Both the Eldritch Spear invocation and the Spellsniper feat are designed to allow you to attack over long range, and spells don't have a Short/Long range.  Imposing disadvantage on that is a huge, and rude, nerf.  If a player wants to spend an entire Feat and Invocation on increasing the range of Eldritch Blast, they should be allowed to do so.

I would personally say that it would depend on how the player actually gets this feat and the type of campaign being run. If this is just a one and done, not RP heavy, or similar type of campaign, then who cares, bam they level up and can do it. If it's a more RP heavy campaign though, I fully expect the player to actually be doing something like training every day as a morning routine for a while to hit things at that range, and because of that the feat actually has meaning to it. You could still twist something to make it work with a variant human that starts with the spellsniper feat and gets the invocation later, but personally I don't think I know many people that wouldn't get something like Warcaster as their starting feat instead.

Side note, for the people wondering, DMG has a section mentioning visibility outdoors. You can see up to 2 miles (over 10k ft) on a clear day so long as your vision isn't obscured by terrain. So yeah you can see 600 ft and even 1200 ft no problem.

Can it be used to launch a player across distance or in the air if blasted from their feet? Because sometimes you just need to *close the distance* before it's too late

although Grasp of Hadar can only trigger on one of the EBs, not all four

I've read where the game designers said that there is a difference between Eldritch Blast targeting "a creature", and a spell like Fire Bolt which targets "a creature or object".

I'm uncomfortable with this. A warlock can try casting an EB at a chest. If they can't get a "target lock", then no harm done. If the spell goes off, then everyone knows to attack the Mimic.

You can't do twinspell because twinspell particularly states it can't be a spell that can do more than one target.

Pretty fair considering you can’t damage objects with it.

i would love it if I could eldritch blast down a door, cart, boat sails, etc.

32 attack rolls, when using Mage Initiate on a fighter, if they're level 20... 320 max damage, when you action surge.

If you take 2 levels in sorcerer and have Haste casted on you, you can become an eldritch machine gun, especially at level 5 and above

You wouldn’t actually be able to twin it due to the little snippet about the twinned spell targeting only a single person. But yes. Quick casting it is always a win XD

If you take repelling blast you can do ALOT of fun things. I started an avalanche by pushing the rocks down and then we found two giant sled things that we rode the avalanche on.

Wait what? I've got to try that sometime.

The basic rules are rules that have been given out for free by the Wizards of the Coast. There are still some rules in the phb that are not considered free. 

I'm needing a little clarification regarding Magic Initiate feat and taking Eldritch Blast. If a 8th level Paladin were to take this option, how many energy beams will the cantrip produce? Is it dependent on the level in the caster class, or character level? Thanks....

Character level. You'd have 2 beams as a level 8 Paladin