Blitz [cost] means You may cast this card by paying [cost] rather than its mana cost, If this spells blitz cost was paid, sacrifice the permanent this spell becomes at the beginning of the next end step, and As long as this permanents blitz cost was paid, it has haste and When this permanent is put into a graveyard from the battlefield, draw a card. Casting a spell for its blitz cost follows the rules for paying alternative costs in rules 601.2b and 601.2fh
The best part of this card is that its a Humility effect that only gets your opponents, and it costs 3 mana at instant speed at that
For example, the First Choice Themed Collection requires you to collect any Bulbasaur, Charmander, and Squirtle card
Sword of Feast and Famine While there are more effective land untaps, Sword of Feast and Famine is notable as the best colorless land untapper by a pretty wide margin
You don't counter-attack a creature, you block it (even though the creature takes damage from your blocking action, which certainly sounds more like a counter-attack to me)