Giving your opponents mana, even at the cost of life, isnt exactly good, but it ensures a chaotic game
Heres a little mockup courtesy of a Reddit post from six years ago: The green lines are the left arm, and the red lines highlight the right arm
These colors should be able to fully station the planets with ease between greens giant creatures and blue artifact decks ability to make Construct tokens
That double effect makes it more than just a combat trickit also pushes your Ring-bearer plan forward
New Blood, on the other hand, has some truly devious uses
According to Wizards, half of zero is zero, and so was born the Prosperity/Cavaderous Bloom deck (or ProsBloom for short)