Castoro Gigante (Giant Beaver)
Castoro Gigante 

Ogniqualvolta il Castoro Gigante attacca mentre è sellato, metti un segnalino +1/+1 su una creatura bersaglio che l'ha sellato in questo turno.
Sellare 3 (TAPpa un qualsiasi numero di altre creature che controlli con forza totale pari o superiore a 3: Questa Cavalcatura diventa sellata fino alla fine del turno. Sella solo come una stregoneria.)
Testo delle regole (Oracle, inglese)
Whenever this creature attacks while saddled, put a +1/+1 counter on target creature that saddled it this turn.
Saddle 3 (Tap any number of other creatures you control with total power 3 or more: This Mount becomes saddled until end of turn. Saddle only as a sorcery.)
Legalità
Chiarimenti sulle regole (in inglese)
2024-04-12
“Saddle N” means “Tap any number of other untapped creatures you control with total power N or greater: This permanent becomes saddled until end of turn. Activate only as a sorcery.”
2024-04-12
“Saddled” isn’t an ability that a creature has. It’s just something true about that creature. It won’t stop being saddled until the turn ends or it leaves the battlefield.
2024-04-12
Creatures with saddle can attack or block as normal even if they aren’t saddled.
2024-04-12
If a permanent becomes a copy of a saddled Mount, the copy won’t be saddled.
2024-04-12
You may activate a permanent’s saddle ability even if that permanent is already saddled.
2024-04-12
An ability that triggers when a creature “attacks while saddled” will trigger only if that creature was saddled when it was declared as an attacker.