While Attune with Aether is a solid synergistic card that gives us energy and allows us to trim a couple of lands, it's not a threat that allows us to get on the battlefield quickly and start pressuring our opponent
Because it is an Elf lord of course
Theres Bruce Banner, a 1/1 blue who can transform into the Hulk with an Enrage condition that gives him a +1/+1 counter when damaged and a second attack phase
The most flexible option is the Talisman cycle, which have all but superceded the older Signet cycle, as being able to tap for colorless after being played helps you chain multiple spells more easily
A great late game top deck and reasonable way to power into the mid game should you find yourself lacking lands, appropriate answers or beefy things to get on with
Maybe pick up one of the far cheaper, non-full-art versions though