Robin, Lord of Fluff

Guinee Pigs you control get +1/+1
When Robin enters the battlefield, create Frost,
a legendary 1/1 Guinee Pig with "whenever Frost attacks, tap up to one target creature and put a
stun counter on that creature" and Speedy, a legendary 1/1 Guinee Pig with Haste and "when
Speedy dies, it deals damage equal to its power to
any target."