When I hover over a tiered spell on my iPhone, it causes a great amount of lag, particularly if there’s more than 10 permanents on the battlefield. It makes it impossible to cast one of the spells making the card essentially dead in my hand. It even does it when doing deckbuilding so I can’t properly read the cards. My iPhone is a 16 plus with plenty of memory and iOS is up to date, as is my Arena app. It’s hard to enjoy this brand new set when one of the new mechanics can’t even be used.