Hey! ^_^ Welcome to the community! Try something like this, it's a budget version of the full midrange Obelisk deck. It has most of the cards you own and some rares and commons you should get. This is just a general outline, feel free to experiment and swap stuff around with it.
Some explanations starting with the cards I added.
Falcius- This should be your number one priority. It's one of the best common cards in the game, it's a 3/3 for 3 that gives your general invulnerability for your turn and 2 attack. It's a huge tempo tool and will make the early game a lot easier.
Pax- Pax is a 2 mana 2/1 rare battlepet, it's a card with its own AI. It'll always attack the closet minion to it, prioritizing cardinal directions over diagonals. Most battlepets aren't that good, but Pax has dying wish summon 2 Iron Dervishes which make it an incredible value play. It's incredibly good in any deck that wants to use dervishes.
Starfire Scarab- 5 mana 4/6 common with blast. It's just a strong value play that pressures your opponent.
Dancing Blades- Probably the best budget minion in the game. 5 mana 4/6 common that deals 3 damage to any minion in front of it. Great tempo card for budget decks.
Cards that I recommend cutting:
Pyromancer- I've used Pyro a lot in the past and it's just too inconsistent for me. It only shines in the early stages of the game with a buff but besides that it's fairly lackluster. It does to everything. It has very little impact outside of the opening stages of the game. Pax is far more consistent and equally powerful play, I recommend swapping Pyro for it.
Windstorm- I don't think Windstorm is as bad a s most people think it is. But it has a weird anti synergy with obelisks by making sure your wind dervishes can't suicide themselves into enemies which can screw over positioning and makes Star's Fury really awkward. It's up to you, but pretty much all Obelisk decks choose to omit windstorm for that reason.
Tethermancer- It's slow and very understatted. It's quite frankly a rather weak card. If you really need a 4 cost dispel consider Lightbender(4 mana 3/3 rare that dispels everything around it.)
If you want to stick with Vet here are some more expensive cards I recommend you pick up or consider at some times. I am going to warn you that the recent set focuses on two previously borderline unplayed archetypes, Golems and Arcanysts. We're not exactly sure how these decks will hold up in the future. However some of them look very solid including the Vetruvian Golem playset. If you get Sirocco and Dreamshaper from the Ancient Bond packs you can put together a fairly strong Vet Golem deck.
-Rasha's Curse(2 mana destroy an enemy artifact and summon a wind dervish near the enemy general. Good reach card and artifact destruction. Is a three or two of in most obelisk decks.)
- Allomancer(4 mana 4/3 with dying wish summon a random obelisk. Very good for obelisk decks but it's up you whether you want to run it over other 4 drops. It's something to test and consider.)
-Star's Fury (You have 1 already but some obelisk decks like to run 2, it's not necessary but something you might want to consider.)
-Aymara Healer (6 mana 5/5 with dying wish heal your general for 5 deal 5 to the enemy general. Good vet legendary you can stick in any deck.)
-Grandmaster Nosh- Rak (7 mana 4/7 with Flying and Blast as well as everything you have deals double damage to the enemy general. An excellent finisher you can toss in any board focused Vet deck. The problem is that it's from RoB packs which make it tricky to get. Consider it in the future once you have some core cards.)
-Nimbus ( 5 man 3/8 whenever it takes damage summons a Soulburn Obelisk. A Soulburn Obelisk is a 0/4 obelisk that destroys any minion that damages it. Very snowbally but slow minion. It's great for certain matchups but too slow for some. It's a very meta dependent card, it's good but not too important.)