You can only activate this effect once per turn
Cards may not be played in US events such as Cups, Challenges, and any other official event
If you want to fill your deck with good ETB effects, heres a few examples: If you want to make bird tokens, there are some ways to get them on the battlefield and ways to benefit from them: Some lands you could be interested in with flying/bird synergy: Some generic flying incentives include: Commanding Conclusion Akim, the Soaring Wind | Illustration by Filip Burburan Bird typal is not as supported a theme as elves, goblins, or zombies, but theres some support nevertheless
Nonetheless, as a common, its only worth about $1
Finally, having access to white, blue, black and red gives us the best of premium interaction and removal