Galarian Moltres V - Why is it so good?

Galarian Moltres; Making the most of out of Eternatus ##Pokémon - 19 * 4 Crobat V SHF 44 * 4 Eternatus V DAA 116 * 1 Galarian Moltres V CRE 97 * 4 Galarian Zigzagoon SSH 117 * 1 Hoopa DAA 111 * 1 Yveltal TEU 95 * 4 Eternatus VMAX DAA 117 ##Trainer Cards - 32 * 2 Viridian Forest TEU 156 * 2 Energy Switch SSH 162 * 2 Pokémon Communication TEU 152 * 4 Boss's Orders RCL 154 * 2 Reset Stamp UNM 206 * 4 Quick Ball SSH 179 * 4 Professor's Research SSH 178 * 4 Great Ball SSH 164 * 2 Marnie SSH 169 * 4 Switch SSH 183 * 2 Pokégear 3.0 UNB 182 ##Energy - 9 * 9 Darkness Energy SMEnergy 7 Total Cards - 60 Disclaimer: I run a similar deck as above but slightly varied. Let's take a look at cards this time instead of a deck but I'll indirectly mention decks and will post a common one. So check it out: Galarian Moltres V from Chilling Reign. Chilling Reign was just recently released and everyone is already looking to boost their decks for the Standard Rotation (Even current Standard). ...