If you are capable of healing your cards, through items, actions, or character abilities, and Beast, Tragic Hero has damage on them at the start of your turn, you can let them attack and then heal them, allowing you to still benefit from the increased strength but keeping them healthy enough to stick around
Furthermore, Energy Cards come in several elemental types: Fire, Water, Grass, Lightning, Fighting, Psychic, Dark, Metal, Colorless, and a few special varieties that buck the rules and do something unique instead
22/102 Pidgeotto
(Dont apply Weakness and Resistance for Benched Pokmon.) [M][M][C][C][C] Heavy Impact: 180 damage
It also triggers on your upkeep, so if you grab Sanctum of Calm Waters or Sanctum of Fruitful Harvest first then they immediately trigger at the start of your main phase