Their ability is incredibly simple, If a red source you control would deal damage to an opponent or a permanent an opponent controls, it deals that much damage plus 2 instead. Basically, any damage you dealt is increased by two, which means you generally want to hit with lots of sources, instead of just one
Pokemon Rowlet 8-Inch Plush $61.74 RECENTLY VIEWED
Incapsula incident ID: 1814000850633692845-175829377032263016
I still use PTCGO for Play Limitless tournaments, coach other players, and more
Finally, Lorehold, the Historian, also lets you discard a card at the end of each opponent's turn, and if you do, you may draw a card
In the post I do indicate that Carddass is the first official release and indicate my stance that TopSun is first refers to unofficial information from collectors the likes of Gary & EB (that discussion is linked in the TopSun resources)