Honestly, this app is no-frills and rather rudimentary in nature, but it also comes with a few other handy features for enhancing your MTG gameplay experience, including poison counters, a dice roller, a game over detector, and more
I will quickly state that the order of these has no actual relevance
Fill in the other slots around this colorless planeswalker with lifegain, ramp, and card draw and you get a bomb late game play that excels in Brawl or some niche Pioneer decks
Modern decks like Soul Sisters can gain life fast enough to get from 20 to 30 life and turn Serra Ascendant on too
Steel Seraph automatically comes with flying, so even if its your only creature in play, you can at least push some damage through with its solid stats and evasion
Any advice for newbies picking up a TCG for the first time