What resolution? 1920x1080 or higher? Do your monitors have DP in and out that will allow daisy chaining?It has to be 1 card, not multiple. It seems like it'll have to be a gaming card. I'm wondering if any specs matter, like ram type or amount. Each monitor needs to be run at high resolution.
Daisy chain is a continuous loop. 1 cable from gpu to monitor, to monitor, to monitor. Standard wiring would have 3 cables, 1 to each monitor.
Just how many monitors are you thinking? What's the budget for gpu and more monitors? Just how far are you wanting to take this?