Basilisk Collar

Equipped creature has deathtouch and lifelink.
Equip {2}

Caltrops

Whenever a creature attacks, Caltrops deals 1 damage to it.

Goblin Sharpshooter

Goblin Sharpshooter doesn't untap during your untap step.
Whenever a creature dies, untap Goblin Sharpshooter.
{T}: Goblin Sharpshooter deals 1 damage to any target.

Isshin, Two Heavens as One

If a creature attacking causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.