Texto em português

Durante o seu turno, seus oponentes não podem conjurar mágicas nem ativar habilidades de artefatos, criaturas ou encantamentos.

Toda vez que Myrel, Escudo de Argivo, atacar, crie X fichas de criatura artefato Soldado incolor 1/1, sendo X o número de Soldados que você controla.

Rulings

Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keyword abilities (such as equip and unearth) are activated abilities and will have colons in their reminder text.2022-10-14
Myrel, Shield of Argive's first ability prevents opponents from activating abilities of permanents on the battlefield that are artifacts, creatures, and/or enchantments. It doesn't prevent activated abilities from cards in any zone other than the battlefield. Notably, this means that your opponents may still activate abilities of cards in their graveyard (such as unearth).2022-10-14