Generally speaking, you can do better than cards that just prevent damage for the turn and do nothing else
Blue We go from the worst color at common to the indisputable best
Incorporate Baeloth Barrityl, Entertainer to get Treasure tokens for ramp and Shiny Impetus to goad another creature
Madam Mim synergizes with the Merlin Rabbit card also revealed this week, but she can also be used to protect a damaged character and allow them to be returned to play later in the game
Cleopatra, Exiled Pharaoh If you want to merge +1/+1 counters with the potential for a group hug strategy and a desire to sacrifice legendary creatures, look no further than Cleopatra, Exiled Pharaoh
Most of them come from special Universes Beyond sets like Transformers or Fallout , and they combine classic MTG gameplay with thematic, sci-fi flavor