Echo means "At the beginning of your upkeep, if this permanent came under your control since the beginning of your last upkeep, sacrifice it unless you pay [cost]." With Old Fogey, there's no cost listed because in ye olden days it was just the mana cost
Some key considerations include rarity, condition, and demand for a particular card
abililty requires the player to return two cards to their hand to successfully deploy her, which can be useful at times but is often a significant loss of board control
While this card is specific, it's the right kind of specific where when employed in the correct shell it's able to truly shine
This octopus advisor is well suited to lead a lifegain matters deck, with cards like Ajani's Pridemate that get a little better each time you draw a card, or cards like Vito, Thorn of the Dusk Rose that enhance your draining abilities