Perhaps its cards like Inga and Esika and Enduring Vitality allowing them to tap for mana
Red and green players hardly lack aggressive options Yarus, Roar of the Gods is another such from this set that does great work but Anzrag is one of the strongest MTG creatures that players have seen in quite some time
This spell can be especially punishing against multicolored decks with optimized mana bases, as it removes nonbasic lands from play
Then you activate it once per turn, or use it once per turn
Also joining the Merfolk team are Deepfathom EchoDeepfathom Echo, Forerunner of the HeraldsForerunner of the Heralds, Jadelight RangerJadelight Ranger, and Thada Adel, AcquisitorThada Adel, Acquisitor
So many of these allies are super low investments that create meaningful and impactful plays throughout the game