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.
For agressive deck such as Skycrag, you hope to draw one or two cheap removal, and a Vara/Titan. Vara is super good at stabilizing versus those deck, given they don't have a permafrost. It's mostly luck of the draw, good draw you win, bad you lose. Hence why in a tournament setting, it's better since you know what deck your opponent is gonna play, so you can mulligan with that in mind. I also ban Praxis token whenever I can, since the tournament format allows it.
The deck is super good versus midrange/cookbook control deck since most card require an answer. I can leave a titan in play, with multiple creature in my hand and power to play them, and still just wait until I have to play them.
Purify/Torch ruins Highwayman deck, so adding a Purify could be a good move. I'd remove a Azindel or HotV since they are the cards that are most often dead in hand. I am debating if I want to swap ICB in the market with Stray into Shadow. It would be better against the Token/Highwayman matchup, and a not too bad followup to a Vara to remove aegis.
The deck is super good versus midrange/cookbook control deck since most card require an answer. I can leave a titan in play, with multiple creature in my hand and power to play them, and still just wait until I have to play them.