We cant recur this with Anikthea (its an Aura), but its cheap enough to cast and will definitely get you value for mana if you get it out early
Whats more, you can add card-draw punishment or discard payoffs with cards like Sheoldred, the Apocalypse or Waste Not
Being able to hit people in their draw steps allows you to take out a lot of card types even when they have no hand
This means you could spend the mana to activate an ability of a permanent with changeling (a keyword ability that gives it all creature types) or a Villain card in your hand or graveyard, for example
Past that, its a mana sink and a way to generate energy from Saheeli, Radiant Creator I feel like if you're at that stage of a game then something has gone wrong
Casting it is great, but it also turns a single-target Reanimate effect into mass reanimation