Venti, Seeking the Melody

Reach

Creatures you control can't attack alone.

Whenever you attack with three or more humans with different powers, choose one—
•Gain 1 life for each attacking creature.
•Put a +1/+1 counter on target attacking human with power
3 or less.
•Tap four humans you control, create Dvalin a legendary
7/7 white Dragon with flying and "Whenever Dvalin deals combat damage to a player draw two cards."