One card serving as an accelerant, discard outlet, and card draw is remarkably efficient, even at 4 mana
It does cost four mana, after all
If your first or second opponent decides to discard, this can set you up in case your third opponent chooses to allow you to summon a creature
Generating a monk who makes green mana, then giving two creatures +1/+1 counters, and finishing off by turning into Remnant of the Rising Star, which allows you to pay X to give a creature entering the battlefield on your side X +1/+1 counters is insane
If a creature enters with counters, those counters are included
While I'm not sure what that has to do with anything I'm talking about, I'm sure it would explain why none of the cards work well together