The ShiftstonedEternal Power Calculator is a deck-building tool that visualizes your odds of drawing enough Influence and Power based specifically on the cards found in your deck.
This deck is the very definition of playing good cards with no combo. In the current meta, the best cards are definitely Jekk, Mercenary Hunter and Turn to Seed. If I want to play these two cards, what color shall I play? Skycrag it is!
It's a product of its environment. When the cards the metagame revolves around deal 4 damage and 2 damage (Jekk and Blazing Salvo), you want units with 5 health. The rest of the deck is cheap removal since aggro was extremely popular.
Makes sense. And is Turn to Seed really that good? I haven't played with it enough to get a feel for it. Killing their draws seems good, but you should probably be able to kill the seed to make sure it doesn't get big.
You can often end the game before the seed becomes an issue, or clear them with Jekk or Lightning Storm if you have to, or even stun them with Permafrost or Spitflame Draconus. Getting rid of any problem (and all future copies or others in play) for only 3 power is very good.