Morph played the biggest role in Onslaught block and Khans of Tarkir block, which both feature heavily in my Greatest MTG Limited Formats article
Additionally, if each player has no cards in hand, you may tap, pay one black, and sacrifice it to play the exiled card without paying its mana cost
Vulpix by the fireplace Vulpix has always been one of my favorite Pokmon, and this artwork feels so warm and cozy
Then if it has eight or more night counters on it, remove all of them and create eight colorless snow artifact tokens named Replicated Ring with ": Add one mana of any color." At the beginning of your upkeep, put a night counter on this artifact
Loxi: I quite like this for Golgari Sacrifice decks, it basically reads "when a nontoken creature dies, draw a creature from your deck" which is...really good in a deck that always wants to have creatures