Megumin, Explosion Loli

When Megumin, Explosion Loli enters the battlefield put 3 explosion counters on it.
At the beginning of your upkeep remove an
explosion counter from
Megumin, Explosion Loli.
When Megumin, Explosion Loli has no explosion counters on it deal 3 damage to target player and
6 damage to all creatures that player controls.