Mist Valley Thunder Lord [HA02-EN060] Secret Rare 2012 Premium Collection Tin You can only use this

You can only use this effect of "Mekk-Knight Spectrum Supreme" once per turn

you can remove 1 Spell Counter from this card instead

or card effect that could have targeted this card: You can activate this effect

and any battle damage your opponent takes becomes halved

Mist Valley Thunder Lord [HA02-EN060] Secret Rare 2012 Premium Collection Tin You can only use thisSet: Hidden Arsenal 2 Card type: Synchro Effect Monster Rarity: Secret Rare Attack: 2600 Defense: 2400 1 Tuner + 1 or more non Tuner "Mist Valley" monsters Once per turn, you can select 1 card you control. Return ir to the hand, and this card gains 500 ATK until the End Phase. This effect can be activated during either player's turn.