It's all DM and well, how you want to use it.
Combining illusions with other spell effects (mind-affecting, and related to the illusion--like a big fire elemental and a little ball of flame around him, plus some extras) can make for some cool stuff, but the DM has to be OK with it, and be willing to fudge and make up rules as things go to deal with it.
Pure illusions can also, work, but you still need good DM cooperation, and some real prep. If you're seen casting an illusion, and it isn't summoning of something, it might look suspicious.
Illusionists' power is often inversely proportional to the availability of magic in the game world. The lower-magic the campaign, the more power Illusionists and Enchanters weild.
Lastly, I agree with the patriotic/depressed little person, that specialist wizards aren't really given what they need, but kind of tacked on, especially Illusionists and Enchanters. The wizards of stories (except of course those set in discworld) would generally have great Charisma and Wisdom (or an extreme lack of it), with some extra Intelligence; not nerds of a campaign world.
Combining illusions with other spell effects (mind-affecting, and related to the illusion--like a big fire elemental and a little ball of flame around him, plus some extras) can make for some cool stuff, but the DM has to be OK with it, and be willing to fudge and make up rules as things go to deal with it.
Pure illusions can also, work, but you still need good DM cooperation, and some real prep. If you're seen casting an illusion, and it isn't summoning of something, it might look suspicious.
Illusionists' power is often inversely proportional to the availability of magic in the game world. The lower-magic the campaign, the more power Illusionists and Enchanters weild.
Lastly, I agree with the patriotic/depressed little person, that specialist wizards aren't really given what they need, but kind of tacked on, especially Illusionists and Enchanters. The wizards of stories (except of course those set in discworld) would generally have great Charisma and Wisdom (or an extreme lack of it), with some extra Intelligence; not nerds of a campaign world.