When using Teyo, Aegis Adept's -6 Ultimate to create the emblem that "At the beginning of your end step, return target white creature card from your graveyard to the battlefield. You gain life equal to its toughness." and targeting Serra's Emissary from the graveyard the game doesn't show me the "choose a card type" selection from Serra's Emissary causing me to be unable to perform any actions and lead to be timing out and being forced to concede.