The Gathering card The Master Multiplied has seen a twentyfold increase in price, going from a dollar to a $20 card in days.

Many of the cards coming in the release were shown on the Magic: The Gatheringofficial Twitch ... players are able to play them from the graveyard, get the "ETB" effect, then potentially sacrifice ...

It's worth noting that there are several MTG card types that can be colorless ... Even then, Ugin's ETB effect and the on-cast effect for colorless spells can also reasonably clear the board ...