Dumbo the Elephant

When Dumbo the Elephant enters the battlefield create 20 token artifacts named Dumbo Food.
At the beginning of your upkeep choose one:
• Sacrifice Dumbo the Elephant
• Sacrifice Dumbo Food
If you have sacrificed 20 Dumbo Foods this way sacrifice Dumbo the Elephant and create Dumbo, King of Elephants a legendary elephant god with base power and toughness 17/17 with trample and "when this creature enters the battlefield create 30 2/2 elephant tokens with indestructible and trample