Echoes of Eternity (Borderless) [Modern Horizons 3] Belenon and once a tile has

and once a tile has placed on the board

you may pay 1R

When you cast a spell this way

Set: Betrayers of Kamigawa Type: Instant — Arcane Rarity: Rare Cost: {X}{U}{U} You may exile a blue card with mana value X from your hand rather than pay this spell's mana cost

or non-Aura enchantment

Echoes of Eternity (Borderless) [Modern Horizons 3] Belenon and once a tile hasSet: Modern Horizons 3 Type: Kindred Enchantment Eldrazi Rarity: Rare Cost: {3}{C}{C}{C} If a triggered ability of a colorless spell you control or another colorless permanent you control triggers, that ability triggers an additional time. Whenever you cast a colorless spell, copy it. You may choose new targets for the copy. (A copy of a permanent spell becomes a token.)