Unlike the paper TCG the only way to get the energy into the Discard Pile is when a Pokmon faints, so if you want to be able to use this early you need to put something out front that your opponent can't afford to ignore
For example, if you control Rin and Seri, Inseparabler as well as a permanent with "Each Dog you control enters with an additional +1/+1 counter on it" and you create a 1/1 Cat token, that Cat token will be a Dog Cat token and will enter with a +1/+1 counter on it, a woof, and a purr
Some characters will get benefits from being at locations
One final thing to be aware of is that you cant put counters on a dead permanent , so playing a creature sweeper to draw off killing your own board only works if Weatherlight Compleated is either above 7 or under 4 counters
It's more of a classic than Mind's Eye because you can kill tokens or X/1 dorks to draw, trigger death triggers like Blood Artist and draw all day long