Inspector de ecos (Echo Inspector)
Inspector de ecos 

Cuando el Inspector de ecos entre al campo de batalla, confabula. (Roba una carta, luego descarta una carta. Si descartaste una carta que no sea tierra, pon un contador +1/+1 sobre esta criatura.)
Texto de reglas (Oracle, inglés)
When this creature enters, it connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)
El encuentro sucedió horas atrás, pero los agentes de la Obscura interpretaron los rastros con facilidad.
Legalidad
Aclaraciones de reglas (en inglés)
2022-04-29
Once an ability that causes a creature to connive begins to resolve, no player may take any other actions until it's done. Notably, opponents can't try to remove the conniving creature after you discard a nonland card but before it receives a counter.
2022-04-29
If no card is discarded, most likely because that player's hand is empty and an effect says they can't draw cards, the conniving creature does not receive a +1/+1 counter.
2022-04-29
If a resolving spell or ability instructs a specific creature to connive but that creature has left the battlefield, the creature still connives. If you discard a nonland card this way, you won't put a +1/+1 counter on anything. Abilities that trigger “when [that creature] connives” will trigger.