Pioneer:
- Amalia Benavides Aguirre is banned.
- Sorin, Imperious Bloodlord is banned.
Modern:
- Nadu, Winged Wisdom is banned.
- Grief is banned.
Legacy:
- Grief is banned.
Vintage:
- Urza’s Saga is restricted.
- Vexing Bauble is restricted.
Explorer:
- Amalia Benavides Aguirre is banned.
- Sorin, Imperious Bloodlord is banned.
It was originally meant to be a Commander card. Based on the other article they put out about Nadu, it looked very different during testing and got changed to its current iteration right before the set was finalized and was never properly playtested.