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“If you chose to pay this spell’s overload cost, change its text by replacing all instances of the word ‘target’ with the word ‘each.’”

"Because a spell with overload doesn’t target when its overload cost is paid, it may affect permanents with hexproof or with protection from the appropriate color. For example, if you cast Blustersquall and pay its overload cost, creatures you don’t control with protection from blue will be tapped."

"Note that if the spell with overload is dealing damage, protection from that spell’s color will still prevent that damage."

"A creature with unleash can’t block if it has any +1/+1 counter on it, not just one put on it by the unleash ability."

"Putting a +1/+1 counter on a creature with unleash that’s already blocking won’t remove it from combat. It will continue to block."

"A spell that can’t be countered by spells or abilities can be targeted by spells and abilities that try to counter it. Those spells and abilities will resolve, but the part of their effect that would counter the spell won’t do anything. Any other effects those spells and abilities have will work as normal."

"The converted mana cost of a creature token is 0, unless that token is a copy of another creature, in which case it copies that creature's mana cost."

"If the permanent has X Mana in its mana cost, X is 0."

"Whenever Archon of the Triumvirate attacks, detain up to two target nonland permanents your opponents control" - "The nonland permanents will be detained before blockers are chosen. Notably, a creature detained this way can't block before it is detained."

"Spells that say "If a spell or ability an opponent controls causes you to discard [Card] put it onto the battlefield instead of your graveyard" It still counts as discarding, such as Liliana's Caress"

• http://www.wizards.com/magic/magazine/article.aspx?x=mtg/faq/rtr

Stating overload makes multiple instances of a spell. It still hits targets, but if it deals damages it is canceled. Abilities still apply.