Runic Armasaur [Core Set 2019 Promos] Avacyn Restored Set: Commander 2011 Type: Enchantment

Set: Commander 2011 Type: Enchantment Uncommon Cost: {2}{W} Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you

The mana is the blood

Set: Conflux Type: Artifact Rare Cost: {4} At the beginning of each player's draw step

If damage is prevented this way

Runic Armasaur [Core Set 2019 Promos] Avacyn Restored Set: Commander 2011 Type: EnchantmentSet: Core Set 2019 Promos Type: Creature Dinosaur Rare Cost: {1}{G}{G} Whenever an opponent activates an ability of a creature or land that isn't a mana ability, you may draw a card. The Sun Empire's most sacred sites are protected by more than prayers.