Slave Knights Greatsword

Equipped creature gains +2/+2 and must attack
on each of your combat phases. Wheneve equiped
creature deals combat damage to a player, put a Darksign counter on Slave Knights Greatsword.
{2}; Remove 10 Darksign counters from Slave
Knights Greatsword: Summon a 10/10 black
Knight creature token withTrample, haste and indestructible.
{2}: Equip