Currently, the MTG Arena economy lets you obtain cards in four different ways on Arena: crafting cards directly from wildcards, opening booster packs, drafting in non-Phantom events, and as random individual card rewards (ICRs) from daily wins and events like Midweek Magic
Steel Overseer is the most straightforward and accessible, but Metastatic Evangel, Felidar Retreat, and Virtue of Loyalty are also valuable
That means you get Final Fantasy: Garland at The Chaos Shrine, Final Fantasy VIII: Children of Fate, Final Fantasy IX: The Siege of Alexandria, and Final Fantasy XV: Camp Comrades
Supportive Parents seems like worse Cryptolith Rite to me by a mile, but some decks just want the redundancy
We got most of the cards from The Dark for sale there, so no need to look somewhere else
Until end of turn, any number of target creatures each gain "Whenever this creature attacks, create a 1/1 white Soldier creature token that's tapped and attacking." Sorcery Color tag templates(None) March of Progress Choose target artifact creature you control