This engine relies on Alena, Kessig Trapper to generate massive red mana based on the greatest power among creatures that entered the turn, which is then fed directly into Emiel the Blessed to blink Alena and reset her tapping ability. Because Concordant Crossroads grants all creatures haste, Alena is able to tap for mana immediately upon returning from exile without waiting to be cast or suffering from summoning sickness. As this loop repeats, you generate infinite red mana alongside infinite creature entries and exits, while Emiel the Blessed's triggered ability even provides a way to passively grow your board with +1/+1 counters using any leftover green or white mana.