Pyramidal Platform

Pyramidal Platform enters the battlefield with
three cuboid counters on it.
{t}: Add {1} to your mana pool.
{t}, exile the top two cards of your library:
Add {u} or {r} to your mana pool. Spend this
mana only to cast an instant or sorcery spell.
{1}{u}{r}, {t}, pay 1 life, remove a cuboid counter
from Pyramidal Platform: Return target instant
or sorcery card exiled with Pyramidal Platform
into your hand. Scry 1.