It's hard to really give you an idea of what the conditions would be because you are sort of thinking of it in reverse. What matters is the value of what YOU have, and what YOU have to offer to someone else. Only when you have a clear understanding of that value can you even consider it.
Think of it from the perspective of the person you are trying to attract. That person has already had success in business, presumably. They are probably doing well financially, right? They probably have other offers and business opportunities available to them, right?
So, why should they help your little business? Why should they even pick up the phone? And really, why should they consider any kind of 'conditions' they they have to deliver before they get equity when you haven't put any value out there?
I get inquiries like this a lot. Things like, "Hi we have this great idea, will you be the CTO for equity in the company?". The answer is always the same: send me a one page overview of the business and I'll let you know. To date, I haven't worked with anyone for equity only.
The reason is that there are great business ideas all over the place. Literally all over the place - there are so many that a 'great idea' isn't worth much and someone who is qualified and experienced is going to gravitate towards deals that are much more developed. When my phone rings and I learn about a startup that has a great idea, an application in beta, a killer team of development/marketing/sales and an awesome marketing strategy that they just need to get funded, now that gets my attention.
So to answer your question, we'll need to know what is going on on your end of the deal. Otherwise it's just not meaningful. Or, I could answer it like this:
If you have a decent idea for a decent business that would make a bit of money then you will have to offer lots and lots of equity to interest good people, and you won't be able to put lots of conditions around them. You will be lucky to get any good interest unless you throw $100k into the mix!
If you have a super hot business with a great team, seed funding, a product in beta, a bunch of partnerships coming together and an already running marketing plan with a venture cap company getting ready to pump the company full of cash - then you barely have to offer anything and you can put lots of performance conditions in the contract.
Most startups have little to offer, and fail over time. Some do great! Which are you? What do you have to offer to someone like me?