When using Espeon's "Solar Suggestion" attack, do I have to move all four damage counters from one of my Pokemon to one of my opponent's Pokemon, or can I split the damage counters from multiple different Pokemon on each player's side?
You can choose up to 4 counters from as many of your own Pokemon as you like, and can split them up on your opponent's Pokemon in any way you want.
Source: Undaunted FAQ (2010-09-09), PUI Rules Team (2010-09-09)

Relevant cards

Note: All applicable cards may not be listed below.
COL1_4
HGSS3_2