Shard Blade

Shard Blade comes into play with 2 heartbeat counters.
Remove a counter during upkeep.
When there are no counters on Shard Blade, equipped creature gets +3/+1 and has deathtouch
If equipped creature dies during combat, Shard Blade is equipped to a creature who dealt damage to the equipped creature and Shard Blade gains two heartbeat tokens.
Equip 0. Shard Blade cannot be unequipped