Hi guys, im a returning player after four years and this deck is the only one i kept and by now updated to what you see here. I just have one question, i read the cascade and yidris rules but aren't sure if the cards i play by the cascade trigger of yidris have a cascade trigger themself. because cascade said i cast them without paying manacost from my hand. So it looks like they have to me, but i just want to check. Thanks in advance you guys.

No, they have not. Yidris only gives Cascade to spells you cast from your hand. But when you cascade, you exile cards from your library and cast them from exile. So not from your hand, so they will not gain cascade from Yidris.

But if you cast a spell with cascade from your hand after you connected with Yidris, it will have cascade twice. Once from the card itself, and one from Yidris.