Tarkir: Dragonstorm Commander (TDC) and Special Guests (SPG) are Commander-, Legacy-, and Vintage-legal sets, and individual cards are also legal where already available in other formats
It has a phenomenal rate and is super easy to trigger, currently seeing play in Pioneer Arclight Phoenix decks, among others
That said, even in Narci cant beat out the best, shes bound to see play in a lot more decks
Matoya, Archon Elder Blue has so many permanents that surveil or scry throughout your turn, like Search for Azcanta, Eyes Everywhere, and Sigiled Starfish, that Matoya, Archon Elder has a ton of card draw potential
Although the Ex-Soldier's effects aren't as immediately devastating as the Midgar Mercenary, he still has plenty of potential for creating a deadly board state
If you are going second, or know your opponent will play an Evasive character turn one, follow up with Minnie Mouse Ghost Hunter to give Nick Alert to take most one-cost characters out, or at least make them think twice about questing
