It seems wizards is more focused on incorporating life gain into other cards with static abilities such as lifelink on creatures, or as an afterthought of a "choose two" card
Think of cards like Bloodghast, Forsaken Miner, and Gravecrawler
Then, you can cast any nonland cards you discard
Equip only as a sorcery.) Artifact - Equipment Artifact (CTRL to add secondary) Creature Corsairs of Umbar : Target Goblin, Orc, or Pirate can't be blocked this turn
With Morph, you dont have to wait and hope you pull another copy of the card you discarded, because you can just play a different Shift character instead
Drop this on something like a Mayhem Devil and you have a very dangerous situation, and it's a cantrip, and you can cantrip it onto an equipment so your opponent's can't so easily 2:1, however that's a lot of moving pieces for a pinger with deathtouch