Moonlight Greatsword

Moonlight Greatsword costs {1} less to cast for
each green creature you control on the battlefield,
and it enters the battlefield with 3 attack counters.
Wield 5 — {2}
When Moonlight Greatsword deals damage to a
player, choose one:
• Destroy target artifact or enchantment.
• Add a +1/+1 counter on each green creature
you control.