When Eye of Singularity enters the battlefield, destroy each permanent with the same name as another permanent, except for basic lands. They can't be regenerated. Whenever a permanent other than a basic land enters the battlefield, destroy all other permanents with that name. They can't be regenerated.
NM-Mint - $2.90
Lightly Played - $2.60
Moderately Played - $2.30
Heavily Played - $2.00
Damaged - $1.50
NM-Mint Non English - $2.90
Lightly Played Non English - $2.60
Moderately Played Non English - $2.30
Heavily Played Non English - $2.00
Damaged Non English - $1.50