
Enchantment
Creatures can't attack you unless their controller pays for each creature they control that's attacking you.

Blue version taxing attackers the same way.

Scales tax by your enchantment count, stronger deterrent.

Phyrexian mana tax that also costs life to attack.

Limits attackers to two creatures regardless of payment.

Creature version of Ghostly Prison's attack tax.

Restricts attackers and blockers to one each.

Requires tapping a creature to attack you.

Taxes both attacking and blocking when untapped.