Ether Well

A tempo spell warped around a hate clause, and the hate clause is the whole point. The baseline effect (sending a creature to the top of its owner's library) is soft removal: it costs the opponent a draw step and a recast, but the creature comes right back next turn. Against red, the spell upgrades to something closer to genuine answer, tucking the creature to the bottom and stranding it for a long while. This is Mirage-era color-hosing in its quieter register, the same design instinct that gave that block its anti-color cards, but expressed through a conditional that sweetens a generically playable instant rather than printing a card that does nothing off-color. The asymmetry rewards knowing your matchup: against blue or green the spell is a stalling tactic, against an aggressive red board it is a clean reset that buys real time. What restrains it is that the choice belongs to the caster only when the target is red; against everything else the spell has a single rigid mode, and putting a creature back on top of a library is the gentlest possible interaction, since the controller simply redraws it. It is a window-buying instant whose value swings entirely on what is sitting across the table.