Lifelink in particular is a great example of how much better lifegain is for an aggressive deck, letting you race other damage-based decks without care
When a Special Summoned monster activates its effect while you have a "Shaddoll" card in your hand (Quick Effect): You can negate the activation, and if you do, destroy that monster, then send 1 "Shaddoll" card from your hand to the GY
But how can you say that with a nice two-sided effect like Exhume powering it for many years
(Note that some effects target a creature, and those effects would still require a legal target to have it explore.) (2018-01-19)
While everyone could just buy every Commander 2018 deck in Magical Christmas Land, considering that the MSRP increased to $40 this year, not everyone has $160 to spend on preconstructed decks, no matter how sweet they may be