how much is this pokemon card worth to Check the Value of Your Cards, Plus Identify Rare Cards price guide for pokemon cards

There aren't many two mana tutors that don't cost a card to use and offer this kind of flexibility, but most creatures are valuable because they are efficient rather than because they are the right tool for the job

A player loses the game after having been dealt 21 combat damage from any one of them, not from both of them combined (although your Background wont usually be a creature anyway)

You can also just use heals

Special Energy Cards: Provide unique effects beyond basic Energy, such as Double Colorless Energy (DCE) which provides two Colorless Energy

You can even get nice results with excess mana from Cabal Coffers or Nykthos, Shrine to Nyx