As a late-game threat, it rewards good timing with serious power
That being said, Leonardo is extremely potent, particularly partnered with Raphael, which gives you a synergistic combat machine
If those Auras would leave the battlefield, exile them instead of putting them anywhere else
The first is strong as you are tossing on two abilities and likely a counter onto a dork, and the next is a drain ability if you have a Vampire you want to give up for the cause of killing a dork or finish off a planeswalker you just attacked into
The MTG x Marvel collaboration will likely offer similar options, giving collectors and players a chance to own high-end, visually stunning cards
For mana advantage honestly only Green can pull it off in the 90s: its the only color with access to staples like land ramp cards Rampant Growth and Wood Elves, along with mana dorks like Birds of Paradise