Even if you arent willing to go to that extreme, just playing good, expensive green cards will already make you some birds
You get pseudo-card advantage, which can allow you to cast spells that target your Vehicles, and it also gives out +1/+1 counters for each spell you cast during your turn
Chulane, Teller of Tales Chulane, Teller of Tales is a pretty busted value creature with a high amount of customizability and power
Similarly, if you're not ramping, and ramping doesn't help you, why are you running Sol Ring
The best options are cheap, efficient, and repeatable
Enter Riverchurn Monument, the missing piece in that puzzle that allows you to win instantly by comboing with a Traumatize effect