Just like with energy counters in Standard, Solemnity keeps players from getting infect counters, which makes it almost impossible for the typical Infect deck to win the game while Solemnity is on the battlefield
I designed a version of Akroma that returned to the battlefield whenever it died, but Bill Rose was much more interested in a creature that just appeared very powerful
No indestructible feels a bit missing
I say creatures specifically because the fact that it only works when youre empty-handed means that youre unlikely to want to play too many purely reactive cards, because you could easily end up with a hand glutted with cards you are unable to play
"'Game Of Thrones' Scribe Bryan Cogman Takes On 'Magic The Gathering' For Fox"
The first level, which is yours for just three mana, lets you draw the first time you create a token each turn