Gyruda and Yidris are a great pairing. 4 colors is even, gets a lot more material to work with, adds 3 more clones, red grants access to haste (I'm thinking incarnations), and green let's use mana ramp by fetch which intrinsically bolsters our Gyruda combo. Yidris also asks for very little as he is good on face value, requiring that we play a proactive good stuff deck, and perhaps grant double strike. Easy to accommodate:) let the true brew commence! Added points for not being cascade matters, and no one else having a Yidris deck, and it being a novel design space.

Behold my utter jank masterpiece! I've wanted a legion deck for sometime, and this is a legion deck with personality. We have Gyruda clone finish, with anger and wonder, and made more effective by the built in land fetch ramp. We have Yidris cascade, with an extra combat step card and some double strike enablers. What's more we can cascade out all the free spells, then recycle them as desired, with dedicated tools to cast them at will. This includes card draw, tutor, and bribery. We have blightsteel as a stop for cascade and a fun one. We have jank etb 2 drops that are filthy when cloned. When we are doing nothing else, we can simply clone the best of everything and do weird clone things, and have grindy resources to fall back on. Grenzo and Lurking predators are hilarious for this reason, as they both spew clones. Like it looks stupid, but the lines are surprisingly deep, and gameplay will be dynamic even, which is mind blowing when most of the deck falls into clone, land, or ramp, and there's like a trickle of card draw/deck manipulation.

Welcome to the Clone War MF'S!

Upon further reflection, the sequence of T2 ramp into T3 Yidris, T4 2 drops into free spells is busted and the best part of the deck. It can lead to T5 Gyruda, and regardless gets us way ahead on resources. So the deck just wants to be drowning in two mana rocks that make color. I've added all the bon green talismans and signets to accommodate this, cutting most to cute cards or 4 mana ramp. The land fetching has to be incidental I think, not a point into itself. The deck might want to go even further into two mana rocks and cut all cute cards, but currently I think have a few busted clone targets and the clone enablers is worth it.

Dream stalker, bad river, underground sea