The Tarrasque (But Better)

Vigilance, Reach, Trample
When The Tarrasque attacks, roll a D20.
1 - 5 | The Tarrasque gains deathtouch until
end of turn
6 - 10 | The Tarrasque gains flying until
end of turn
11 - 15| The Tarrasque deals 4 damage to
each opponent
16 - 20 | The Tarrasque gains Myriad until
end of turn