Let's turn to another legendary permanent next
Horizon Seeker I think re-useable land tutoring is good, snow-lands are basic lands, so that's neat, 3 to get out and 2 to use is a lot of mana to invest in a potential land tutor for a basic though, and it's not an elf, but rather a human warrior, which generally tend to be white (though obviously not always)
Aside from the aforementioned Act on Impulse, weve been given Light Up the Stage and, more recently, Reckless Impulse
Try combos of classic characters
This Dihada, Binder of Wills deck can win in a few different ways, only one of which is what Id call a big flashy play
Its also really easy to break, as all you need is two creatures that can flicker each other, which not only produces infinite +1/+1 counters on your creatures, but also scales firebending up to make infinite mana when Zuko attacks