Korabas Otar Tantaral

Fly, indestructible.
When this creature enters the battlefield and at
the beginning of each upkeep, a random player
get an emblem with "Spells you cast cost {1}
more to cast."
When this creature become tapped, untapped or
this creature attack or block, exile a random
other permanent.
Whenever a player casts a spell, if no mana was
spent to cast it, counter that spell.