Chungus

When Chungus enters the battlefield, all insects under your control gain the Tamed ability

Insect Rider: Chungus can crew any Insect under your control of Medium size or higher, granting Vigilance and +2/+2 to the crewed creature

Whenever an opponent loses life, roll a d6. If you roll a 5 or higher, level up Chungus

"Hey guys, I found a swamp..."
"...HELP MEEEE!" -Chungus