Returning a cheap creature with an enters or dies trigger to your hand makes paying two mana and two life seem like a small price to pay as you repeatedly drain lifedrain life, make tokensmake tokens, draw cardsdraw cards, make the table sacrifice creaturesmake the table sacrifice creatures, or worst of all, mill more cardsmill more cards to get better stuff back into your hand
Card Draw All the dungeon and initiative cards provide card draw of some sort, either small incremental advantages or actual cards drawn, but I did want to include a few other ways to draw more cards in the deck
Funnily enough, his origin with Magic: the Gathering was with the set Magic Origins
And yeah, it will usually come into play tapped, but thats a fair price to pay
I wonder if the last three months of Hogaak prompted any of those memories to resurface with Feasting Troll King