Hetsuhechi, Heart to Hands

{1}, Pay 2 life: Add two mana of different colors.
{t}, Discard a card: Add X mana of any one color,
where X is the discarded card's mana value.
Spend mana from Hetsuhechi only to cast
artifact or enchantment spells. Artifacts and
enchantments cast this way gain echo. The echo
cost is equal to its mana cost reduced by up to
{1}{r/g}, to a minimum of {1}.