Chaos Spawn

Whenever Chaos Spawn attacks, roll a D6: On a
1 or 2, it gets +3/-3 until end of turn. On a 3 or
4, it gets indestructible until end of turn. On a 5
or 6, it gains trample and "Whenever this
creature deals combat damage to a player, that
player discards cards equal to the damage dealt"
until end of turn.
The Chaos Spawn created thanks to Nurgle's
"blessings" are hideously volatile.