Loxi: Yeah I'm not crazy on this one either
You must pay any mandatory additional costs (such as sacrificing a creature) and you may pay any optional additional costs (such as kicker) for the card you cast
While it certainly wasnt beating the unplayable charges in Standard, The Deck of Many Things is much more viable in Commander, where it can serve as a late-game value engine
Whenever your Merfolk deal combat damage to a player, draw a card
While it remains an excellent choice for players who enjoy an aggressive, tempo-oriented playstyle, the format's top decks have ultimately outpaced it in terms of efficiency, flexibility, and overall power.
Improvements + Cards To Drop The biggest problem this deck faces is card draw, with only one card that does that efficiently