Does Espeon's "Solar Revelation" Ability prevent moving or placing damage counters?
In the steps of resolving an Attack, moving or "placing Damage Counters" counts as an Effect of the attack; it is not part of "doing damage". Therefore, as an Effect it would be prevented by Solar Revelation.
Source: TPCi Rules Team (2012-05-10)

Relevant cards

Note: All applicable cards may not be listed below.
BW5_48
BWP_BW92
BWP_BW92