Lliira, Indomitable Spirit

Lliira, Indomitable Spirit can't be countered.
When Lliira, Indomitable Spirit enters the battlefield or attacks, create a 1/1 White Cat
Token under your control.
{w}{w}: Target creature you control gains hexproof
until the end of turn.
"What are we going to play today?"
—Lliira to Salathiel