Can only be used if you control an Earthbound Immortal monster.
Earthbound Wave is powerful compared to other Counter Traps with similar negation effects. These types of cards usually negate an opponent’s effect at the cost of discarding a hand card. Dark Bribe negates an opponent’s Spell/Trap card but gives them a draw. Earthbound Wave is strong because it requires no cost, however it does require you to control a monster that could potentially be difficult to summon.
You don't have understand the point.
No one want the immortal unbeatable.
In the anime you have a reason for which you can call this creature almost immortale with a weak point (effect monster). In OCG, nope, these monsters, alone, are easily taken down over the field with a trap or a spell.
Hmmm... the meta is so fast for cards like this, maybe they need to ban treacherous, for real. Too many run 2 copies of it.