Doubling your lifegain just doesnt matter in Limited, and cost reduction isnt that important either, especially once youve hit 4+ mana already
The most impactful that Id personally pick would be: Deflecting Swat, which is always good when you need to protect a Commander that attacks for value and damage
It has continued to dominate Standard since October, and is currently going through a new creative process on Magic Arena to alter or nerf cards that have become too powerful
Maybe it would see better use in decks that go wide with tokens and use equipment as a side theme instead of in Voltron decks
Ordinarily, I side in additional removal and could see Sensory Deprivation here, but I think the creatures are harder for those decks to beat
Its a progressive learn-to-play experience that starts off with two pre-made decks, and adds reward packs for each player at set milestones