If you dont give it to another player, it converts
The turn when you get to pull two or more phoenixes from your graveyard onto the battlefield attacking is usually backbreaking
City in a Bottle will wipe out any permanent from the Arabian Nights expansion, and it won't let players play any more cards from that set, either
Sample Decklist The Commander At a glance, Zack Fair seems like a decent support card, but a terrible commander: hes a simple 0/1 Human Soldier that costs one white mana and comes into play with a +1/+1 counter , and later you can sacrifice him to give his +1/+1 counter and one Equipment to another creature
Harmonic Prodigy would allow it to trigger twice
You attack three opponents, create two token copies of Avenger, and suddenly you have tripled your plant token count and triggered Landfall multiple times