Not only is it a valuable form of flexible instant-speed play for decks/colors often lacking that kind of thing, but Flicker also turns any triggered abilities into potential instant-speed reactions for an even broader set of options
This isnt a new card, so it has powered Blue/Red decks in the past
Cyclonic Rift this is not, but it still has its uses, especially if you play big fatties like me (Leviathans!), and want to clear the board
Kefka, Court Mage / Kefka, Ruler of Ruin Rating: 8/10 Kefka is the big bad of Final Fantasy VI and one of the most famous villains in the entire series
9 Doomsday Confluence The mono-colored Confluences debuted in Commander 2015, then made a reappearance as 3-color cards in New Capenna Commander
From there, the deck picks up steam fast