Sometimes, we like opening lots of packs at the same time , and when we open a lot of packs, we want to feel it
Other times, a card is designed with a two-for-one already built into it
Nevertheless, Fourth Edition has several MTG staple cards and mechanics in its rooster, including: An interesting selection of old-school counterspells: besides the counterspellest of them all, Counterspell, Fourth Edition includes two color hosers (Red Elemental Blast and Blue Elemental Blast) that do double-duty as removal, and enchantments like Lifeforce that work as counterspells at interrupt speed (what would nowadays be an instant)
When combat damage is dealt by Terra, you may pay two mana to return a creature with three or less power from your graveyard to the battlefield tapped
The true fetch lands are the 10 Onslaught/Zendikar-style ones that can enter untapped and grab lands with basic land types