dark tower card sleeves 500 Counts Black Sleeves, Matte Card Sleeve Deck Card Protectors, Trading Card Fit for MTG, TCG and Sports Cards : Toys & Games but look like you’re not using any card sleeves at all Return to Dark Tower -

Imagine how good a one mana removal spell for 1 that you can also plot for 1 would be

General Proliferate Notes: To proliferate, you can choose any permanent that has a counter, including ones controlled by opponents

And to be clear, this is certainly not proof that attacking Battles is worthwhile

The card is not an incredibly powerful one in play, although it can be decent if luck is on the players side with the gamble involved in the Frog Hop ability

For Amulet of Vigor's ability to trigger, a permanent must enter the battlefield tapped due to an effect that says "put [the permanent] onto the battlefield tapped," "[this permanent] enters the battlefield tapped," or the like