Heals you for free whenever you activate a Counter Trap card.
Can be used to destroy a card your opponent controls.
Condition for activating effect is quite specific making him less useful in decks other than Counter Fairies.
Below average stats make him difficult to keep on the field.
Use this card in a deck with lots of Counter Trap cards, monsters with effects that support Counter traps(usually Fairy-type monsters), and Sanctuary in the Sky. This strategy is called Counter Fairies and could be a very powerful anti-meta option.
Counter Trap support
Here are some other monsters whose effects activate and/or trigger when you activate counter trap cards. They can be used together in a deck centered around activating counter trap cards and then triggering monster effects to get the best possible value out of them.
The better effect of this card is that you can destroy a card your opponent controls after countering another card. Since counter trap cards usually give you a minus in card advantage when activated, Meltiel’s Destruction effect helps even out your loss.
Counter Trap cards
Here is a list of Counter Trap cards with powerful disabling effects that you can use in combination with Counter Fairies.