Gleeko, the Mighty

Cascade, trample, flash
Gleeko gets +1/+1 for each dinosaur you
control and +1/+1 for each dragon you control .
At the beginning of your upkeep, pick target
Dinosaur or Dragon. During your endstep,
put half of X +1/+1 counters rounded up on
Gleeko, where X is picked creature's power.
Creature spells you control with mana value 5 or
greater have Cascade.
Creatures you control with power 7 or greater
have trample.