Klang doesn't have an Ability but it does have two moves, the first move takes one colorless energy card and confuses the defending Pokemon, this move is called Metal Sound
If it's a creature card with power 5 or greater, put it into your hand
But is it good
There will be times where you can use that extra combat step to great effect, but there will be more when you have neither the time nor the mana, nor the board state to actually make this matter Not enough nonbasic lands in the format Giving a creature firebereathing isnt particularly useful unless that creature was also pretty good, but this does replace itself, so that makes the floor on it pretty reasonable, especially for a one mana card
Thats everything you need to know about how to sell Pokemon cards in 2023
Additionally, the layouts of Trainer and Energy cards will be changed, and expansion codes will replace expansion symbols