Today during my Arena Powered Cube match, at the beginning of my turn, I saw a trigger from Urza's Saga before it sacrificed itself. Legally, I can tap Urza's saga for mana before the trigger resolves. However, I could not tap or even see Urza's Saga behind the trigger, leading me to miss out on a key mana threshold and losing the game. Has anyone ever reached out with this issue? It was very frustrating for me.