Chillerpillar
Snow Creature — Insect
: Monstrosity 2. (If this creature isn't monstrous, put two +1/+1 counters on it and it becomes monstrous. can be paid with one mana from a snow source.)
As long as this creature is monstrous, it has flying.
From its cocoon, a flurry takes flight.
Suzanne Helmigh
Modern Horizons (MH1)
• #43Rulings
Chillerpillar gaining flying after it becomes blocked won’t remove the blocking creature from combat or cause Chillerpillar to become unblocked.
(wotc • 2019-06-14)
Monstrous isn’t an ability that a creature has. It’s just something true about that creature. If the creature stops being a creature, loses its abilities, or loses its +1/+1 counters, it will continue to be monstrous.
(wotc • 2019-06-14)
Once a creature becomes monstrous, it can’t become monstrous again. If the creature is already monstrous when the monstrosity ability resolves, nothing happens.
(wotc • 2019-06-14)
Rulings
Chillerpillar gaining flying after it becomes blocked won’t remove the blocking creature from combat or cause Chillerpillar to become unblocked.
(wotc • 2019-06-14)
Monstrous isn’t an ability that a creature has. It’s just something true about that creature. If the creature stops being a creature, loses its abilities, or loses its +1/+1 counters, it will continue to be monstrous.
(wotc • 2019-06-14)
Once a creature becomes monstrous, it can’t become monstrous again. If the creature is already monstrous when the monstrosity ability resolves, nothing happens.
(wotc • 2019-06-14)