Mágica Instantânea
Adendo — Se você conjurar está mágica durante sua fase principal, coloque um marcador de escudo em uma criatura que você controla. (Se ela sofreria dano ou seria destruída, em vez disso, remova um marcador de escudo dela.)
Escolha um tipo de marcador em uma criatura que você controla. Coloque um marcador desse tipo em cada outra criatura que você controla.
If you cast this spell during your main phase, you may choose the shield counter for the second part of the spell.
A creature with a shield counter on it may still be destroyed by state-based actions if it has damage marked on it equal to its toughness or has been dealt unpreventable damage by a source with deathtouch.
If a permanent that would be dealt damage has more than one shield counter on it, that damage is prevented and only one shield counter is removed.
“Shield” is not an ability that creatures have and shield counters are not keyword counters. If a creature with a shield counter loses its abilities, the shield counter will still protect it as normal.
If a permanent with a shield counter is dealt unpreventable damage, that damage will be dealt and a shield counter will still be removed.
Shield counters don't prevent players from sacrificing creatures.
Removing a shield counter in this way isn't the same as regenerating a creature.