Arquiteto-Mor

Text:

As outras criaturas azuis que você controla recebem +1/+1.
: A criatura artefato alvo torna-se azul até o final do turno.
Vire uma criatura azul desvirada que você controla: Adicione à sua reserva de mana. Gaste este mana somente para conjurar mágicas de artefato ou ativar habilidades de artefatos.

Rulings:

• 8/7/2020 Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to a blue creature you control may become lethal if Grand Architect leaves the battlefield during that turn.
• 8/7/2020 Grand Architect’s second ability causes the affected artifact creature to lose any other colors it has, but it doesn’t cause it to stop being an artifact.
• 8/7/2020 You can tap any untapped blue creature you control, including one you haven’t controlled continuously since the beginning of your most recent turn, to pay the cost of Grand Architect’s mana ability. This includes Grand Architect itself.