Texto em português· tradução de outra edição

Toda vez que uma criatura entra em jogo, você pode adicionar {1} à sua reserva de mana para cada criatura que você controla que compartilhe um tipo de criatura com ela.

Rulings

The amount of mana to add is determined only as the triggered ability of Mana Echoes resolves. The ability isn't a mana ability; players may respond to it.2020-08-07
The creature entering the battlefield shares a creature type with itself if it has any creature types, so Mana Echoes usually adds at least {C}.2020-08-07
Mana Echoes counts the number of creatures that share a type, not how many types they share. For example, if a Human Warrior enters while you control two Humans and two other Human Warriors, you'll add five {C}.2020-08-07