Amethyst

Haste, Triple Strike
Amethyst may be cast on an opponents turn if
one or more of their creatures are attacking you.
Amethyst gets +1 /+1 when group blocking.
"Ugh, you are just so childish!" — Pearl
"Yeah, yeah, don't forget: reckless, vulgar,
loud-mouthed. That's just what makes me
so awesome!"