Giant Boar Prisoner

Trample, Indestructible
When Giant Boar Prisoner enters the battlefield
your opponent may pay any amount of mana, the player who paid the most gain control of Giant
Boar Prisoner. (In case of a tie, each player roll a
d20 until someone get the highest.) Its owner Create
X Treasure where X is the greatest amount of
mana spend by an opponent during this phase.
Giant Boar Prisoner can't attack its owner