It allows the caster to draw three cards, then put two from their hand on top of their deck in any order
This legendary creatures proliferate ability works especially well with planeswalkers, as you can put extra loyalty counters on each of them at the end of every turn
Sacrifice creatures that make tokens when the die, like Infestation Sage and Nesting Bot, to Bartolome del Presidio or Zahur, Glory's Past, hopefully with a Sephiroth, Fabled SOLDIER and / or Elas il-Kor, Sadistic Pilgrim and Vengeful Bloodwitch on the battlefield to drain the opponent out of the game and gains tons of life
Flipping a giant Chaos Orb to jokingly destroy many permanents in a game of Old School sounds hilarious, but I guess that joke is overdone
Those finishes look incredible in person
However, Dominaria United revealed a particularly grim fate for Weatherlight