Ertha Jo, Frontier Mentor 
Legendary Creature — Kor Advisor
$0.25 #8098 0.25 2.4 years
When Ertha Jo enters, create a 1/1 red Mercenary creature token with "
: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."
: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."Whenever you activate an ability that targets a creature or player, copy that ability. You may choose new targets for the copy.
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Cards similar to Ertha Jo, Frontier Mentor expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Illusionist's Bracers90%
$4.53↑#1616↑0.40↑13.6 years↑
"Whenever an ability of equipped creature is activated, if it isn't a mana ability, copy that ability. You may choose new targets for the copy."
Echo, Perceptive Prodigy86%
$0.25#12244↓0.00↓0.2 years↓
"
, : Copy target activated or triggered ability you control from a creature source. You may choose new targets for the copy."
, : Copy target activated or triggered ability you control from a creature source. You may choose new targets for the copy."
Rings of Brighthearth86%
$6.16↑#1421↑0.55↑18.9 years↑
"Whenever you activate an ability, if it isn't a mana ability, you may pay . If you do, copy that ability. You may choose new targets for the copy."
. If you do, copy that ability. You may choose new targets for the copy."
Strionic Resonator84%
$6.26↑#590↑0.59↑13.1 years↑
", : Copy target triggered ability you control. You may choose new targets for the copy."
, : Copy target triggered ability you control. You may choose new targets for the copy."
Gogo, Master of Mimicry84%
$4.10↑#3491↑0.51↑1.2 years↓
"
, : Copy target activated or triggered ability you control X times. You may choose new targets for the copies. This ability can't be copied and X can't be 0."
, : Copy target activated or triggered ability you control X times. You may choose new targets for the copies. This ability can't be copied and X can't be 0."
Prickly Pair83%
$0.09↓#15911↓0.00↓2.4 years
"When this creature enters, create a 1/1 red Mercenary creature token with ": Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery.""
: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery.""
Battlemage's Bracers80%
$3.43↑#5552↑0.11↓5.4 years↑
"Whenever an ability of equipped creature is activated, if it isn't a mana ability, you may pay . If you do, copy that ability. You may choose new targets for the copy."
. If you do, copy that ability. You may choose new targets for the copy."
Kurkesh, Onakke Ancient78%
$0.29↑#17839↓0.57↑12.1 years↑
"Whenever you activate an ability of an artifact, if it isn't a mana ability, you may pay . If you do, copy that ability. You may choose new targets for the copy."
. If you do, copy that ability. You may choose new targets for the copy."
The Enigma Jewel // Locus of Enlightenment78%
$1.36↑#6402↑0.232.8 years
"Whenever you activate an ability that isn't a mana ability, copy it. You may choose new targets for the copy."
Tawnos, Urza's Apprentice76%
$0.45↑#16767↓0.288.1 years↑
"
, : Copy target activated or triggered ability you control from an artifact source. You may choose new targets for the copy."
, : Copy target activated or triggered ability you control from an artifact source. You may choose new targets for the copy."
Abstruse Archaic76%
$2.75↑#5636↑0.43↑3.1 years
", : Copy target activated or triggered ability you control from a colorless source. You may choose new targets for the copy."
, : Copy target activated or triggered ability you control from a colorless source. You may choose new targets for the copy."
Virtue of Knowledge // Vantress Visions76%
$5.38↑#2204↑0.42↑3.0 years
"Copy target activated or triggered ability you control. You may choose new targets for the copy."
Agrus Kos, Eternal Soldier75%
$1.70↑#12006↓0.243.8 years↑
"Whenever this card becomes the target of an ability that targets only it, you may pay 
. If you do, copy that ability for each other creature you control that ability could target. Each copy targets a different one of those creatures."
. If you do, copy that ability for each other creature you control that ability could target. Each copy targets a different one of those creatures."
Mirror-Shield Hoplite74%
$0.13↓#23896↓0.13↓3.4 years
"Whenever a creature you control becomes the target of a backup ability, copy that ability. You may choose new targets for the copy. This ability triggers only once each turn."
Ambassador Oak73%
$0.06↓#23771↓0.53↑18.6 years↑
"When this creature enters, create a 1/1 green Elf Warrior creature token."
Elderleaf Mentor73%
$0.07↓#18276↓0.00↓5.6 years↑
"When this creature enters, create a 1/1 green Elf Warrior creature token."
Daysquad Marshal73%
$0.14↓#23670↓0.00↓6.4 years↑
"When this creature enters, create a 1/1 white Human Soldier creature token."
Protector of Gondor73%
$0.11↓#18424↓0.38↑3.2 years
"When this creature enters, create a 1/1 white Human Soldier creature token."
Wakandan Shield Guard73%
$0.11↓#28483↓0.00↓0.2 years↓
"When this creature enters, create a 1/1 white Soldier creature token."
Attended Knight73%
$0.09↓#18453↓0.60↑14.1 years↑
"When this creature enters, create a 1/1 white Soldier creature token."