Good starter value
If it's in a hidden zone, use the helper card
This approach is itself symptomatic of the overall power creep of the format, with average game lengths shortening
Energy Link costs two Energy and does 40 damage while also allowing you to place an Energy from the Discard Pile onto Kingdra so it can use its second Move, Protective Swirl
Cabal Pit Cabal Pit asks an interesting question: How much damage are you willing to take down the line for a Disfigure later on
Whispers of the Muse (T1, Ext, S, Block) A favorite in "Turbo Xerox" (a blue deck which used minimal land but a ton of cantrips to thin out the deck), Counter-Phoenix (Shard Phoenix + Forbid) and Tradewind-Awakening (put Awakening on the stack, tap all your lands for mana, untap all your lands), Whispers has what might seem like a hefty price to pay for one card but you get to do it turn after turn after turn