Turns out its an enabler for some pretty degenerate infinite combos, which is exactly what that format is all about
A Realm Reborn Bahamut, Warden of Light Braska's Final Aeon Esper Terra Ifrit, Warden of Inferno Phoenix, Warden of Fire Ride the Shoopuf Shiva, Warden of Ice Sidequest: Card Collection Sidequest: Catch a Fish Sidequest: Hunt the Mark Sidequest: Play Blitzball Sidequest: Raise a Chocobo Sleep Magic Stuck in Summoner's Sanctum Summon: Alexander Summon: Anima Summon: Bahamut Summon: Brynhildr Summon: Choco/Mog Summon: Esper Maduin Summon: Esper Ramuh Summon: Fat Chocobo Summon: Fenrir Summon: G.F
This is one of the strongest battle cards, for sure
Sven Stolz Unholy Heat has to be one of the stronger and more meta defining printings for Modern since MH2
All in all, it's a very efficient tracker, considering it's free
Cards like Seismic Assault allow you to turn any land into two cards, and you can go infinite with cards like Niv-Mizzet, Parun