i'm telling you this as someone who built pure gagagas: that card doesn't work here. use star drawing instead, since your only xyz monsters are 4 and 5. star drawing can treat itself as a level 4 or 5 monster, and also gives you a draw when you xyz summon with it, so it's flat out better.
sorry to say, it's not relevant any more. if you want a card to stall with, try using some of the traps i mentioned before.
if you're using your maindeck monsters to attack, you're doing something wrong. and trust me, sacrificing that maindeck power in order to have more consistent xyz summons is key, so replace one golem, and the zombie, with 2 more giants.
this card is a false friend if there ever was one: the idea of being able to add one of 3 cards to your hand seems like something that would stop bricking, but in actuality will CAUSE bricking, because you can't do things and use that card in the same turn. that means that, should you choose to do something more significant, PoD is essentially a blank card that turn.
higher priorities. eset isn't the best, but i got what you were going for and let it be. though photon slasher is actually half decent for your deck, used in a lot of decks like this one.
now in my last post i didn't recommend all that many card to add, mostly just cards to cut. i'm keeping your budget in mind with this.
mentioned above.
your best monsters are all light, and honest suits pretty much any light deck. you can discard honest during the battle step of any battle involving one of your light monsters to increase your monster's attack by their monster's attack, essentially making it a better waboku, because it can be used from hand. we call these monsters "hand trap" monsters, because you can use them from your hand during their turn.
slightly more expensive, but usable in virtually every deck, so it's an investment of sorts. discard this card, and every time your opponent special summons this turn, you draw 1 card. you'll usually be able to draw at least 1 card, meaning you don't lose any card advantage. however, if you play it when your opponent is about to spam their field, you leave your opponent in an awkward situation: they either have to end their turn prematurely, or let you draw a bunch of cards. meaning that maxx "c" is both a draw card and a staller all in one, perfectly filling the niche you've assigned to one day of peace.
or, if you can't afford it
your deck is fragile, and very weak to floodgate cards (cards that prevent players from performing certain actions). between cards like Domain of the True Monarchs, which prevents you from using the extra deck at all, or vanity's emptiness, which stops special summons entirely, or general trap cards like solemn strike or solemn warning, you need to be able to deal with a certain amount of backrow. that's what MST/TT are for. twin twister is generally considered better, but don't worry about that one too much if you can't afford it. higher priorities, and all that.
if you decide to keep gagaga magician instead of star drawing, this card might be worth a look. every time you xyz summon utopia monsters, it gains a counter, and you can remove 2 counters to summon a gagaga or gogogo monster from deck. it's a nice way to extend your plays, and might help to get out a utopia monster and a zw monster on the same turn. in this case, and pretty much only this case, gagaga magician is better than star drawing for your deck.
another "hand trap" monster, which is to say one you can discard during the opponent's turn. this card negates a face up monster's effect for the rest of that turn. i say it's low priority, because it belongs in your side deck (the row below the extra deck). in case you don't know, yugioh, like many card games, is typically played in best-of-3 games, called matches.
infernoids were heavily dependent on a card called Reasoning, which was limited to 1 copy because fuck you.