The question will come down to the tap ability, on the one hand, which is good but is a tap ability, and whether or not Naya is better than Kadena, Slinking Sorcerers Sultai
More than power needs to be considered when beginning in a TCG
Personally, while I haven't been able to respond to every message, I have read them all and feel like I've learned so much
One of my general rules is I wont destroy someones first Burnished Hart or their Sword of the Animist before its mana-neutral (two lands into play)
Taking into consideration where you plan on playing, be that in local game events like Friday Night Magic, Draft events, casual Commander games, or tournament events will affect what type of sleeves you'll want to pick up
Making More Mana There are lots of other ways to make more mana to power Marath's shenanigans