Flying creatures are hard to block, and this deck takes full advantage of that
In terms of flexibility , wherever possible I picked cards with alternate casting costs, conditional bonus effects, choices to make after casting, synergy with paired colors, and so on
Many decks use this reliably, and I can only imagine how many more would do so if it were printed as an uncommon or common
His passive ability reduces the cost of the next spell that you cast after you scry
It also gives you mana towards them, in increasing quantity each time
Humans are especially strong at this, with Selesnya Humans being one of the strongest archetypes in Historic, thanks to how quickly the +1/+1 counters start spreading across them