The triggered ability will trigger once for each player or battle dealt combat damage by Dragons you control, no matter how many Dragons were involved
While that can be fun for collectors, its frustrating for people wanting to play the Pokmon Trading Card Game
You dont want to barge into the LGS during FNM with 4,000 loose cards and seven binders for them to rummage through, so try to contact them first and see when you can drop a collection by for an estimate
Avacyn Restored introduces powerful mechanics like Miracle, allowing spells to be cast for a reduced cost when drawn at the right moment, and Soulbond, which pairs creatures together for shared abilities
Only artifacts can rival green for mana production, and any format where Tinker is legal has access to fast mana
For example, I don't like fruit