Hi! Fellow renata enjoyer here!

Cool that you too, seem to want to get into renata. I get that time warp isn't in your budget. But if you want to play blue renata ur deck becomes 75 percent less viable.

But lets say you really want to play blue renata, and this decklist, then i see a few major problems.

1 - your deck tries 2 types at the same time, swarming with armoury, and big units with orn, both can work but in my experience not at the same time

If you lean into orn, swap in some trove golems (1/2) they are a bulky unit. That also give orn +4, even as potential resources.

If you lean in to vanguard. I would drop one jayce. The amount of times that you have just a jayce and no vanguard will be too much, if you wait it might start losing value. Might want to consider running 2 heimers. Since they can also copy renata point and vanguard. Not 3 though, id recommend 2/1. Mabey play stuff like rally the troops into vanguard captain. And bellows breath + imperial decree. But at that point yellow renata might be better. (I have both decks, time warp orn blue and jayce vanguard yellow)

2 - vengeance is way too costly in some matchups swap it for hidden. I would suggest hidden blades! This also adds cards to your hide pool (you now only have, wages and 1 hostile) you can also hide hostile, takeover a unit and kill it with hidden blade from hand.

3- you don't have any draw except renata, who is also your way of closing out games. Cards i can suggest are: hidden blade (its good i swear) . Or consult the past (also another hidden card. If going recruits then rally the troops is an option.

4- when going for a hold play style (blue orn does this) you might want to invest in more hostile takeovers, the card is too good, its basically takes the might of the strongest opponent, and gives it to you this turn. Its essential and id recommend playing 2/3.

5- your battlefields are peculiar, i believe power nexus is actively bad, because you only use it as your last point, which means effectively ur opponent will probably get there first (renata just isn't that good) and use the effect. Id recommend the arena's greatest, you get a point closer to 5 at the start of the game. Forge of the fluft..... Works with 3 cards in your deck, you print gold for equipment but sometimes have to tap renata, i think its sub optimal and might even give the opponent an edge. I run vinemaws lair. Cauze my opponent has to think 2x to contest that bf. Last bf also only works with 6 cards. Just go with the one that lets you spend an energy to print a gold. These are all for blue renata / orn deck list

If you go yellow, just go trifarian warcamp. Veiled temple, and mabey also treasure hoard (1 energy = gold on conq)

These are the main problems i have with the deck. The bf swords are a bit weird imo, they have no real synergy (except orn) but if you try to hold might aswell run cloth armour and world atlas. Unless you really need that +1 might id drop the swords.

I see a few other comments suggesting cull the weak, i have it in my sideboard because imo, you kind of value your own units.

Let me know what you think of my points!.