Calciderm

Shroud is a static ability. “Shroud” means “This permanent or player can’t be the target of spells or abilities.”

Multiple instances of shroud on the same permanent or player are redundant.

Vanishing is a keyword that represents three abilities. “Vanishing N” means “This permanent enters with N time counters on it,” “At the beginning of your upkeep, if this permanent has a time counter on it, remove a time counter from it,” and “When the last time counter is removed from this permanent, sacrifice it.”

Vanishing without a number means “At the beginning of your upkeep, if this permanent has a time counter on it, remove a time counter from it” and “When the last time counter is removed from this permanent, sacrifice it.”

If a permanent has multiple instances of vanishing, each works separately.