As long as this card is attached to a Pokemon, it provides Fighting and Darkness Energy but provides only 1 Energy at a time, and the attacks of the Pokemon this card is attached to do 20 more damage to your opponent's Active Pokemon (before applying Weakness and Resistance)
Land removal: Demolition Field , Strip Mine , Armageddon, etc
The debate is whether history will repeat itself
Each one solves fundamental problems that the majority of decks face while providing exceptional value across multiple archetypes
This was due to the dinosaurs Primeval Law Ability, preventing Active Pokemon from evolving
If unspent mana you have has any restrictions or riders associated with it (for example, if it was produced by Omen Hawker), those restrictions or riders remain associated with that mana when it becomes black