Vontrr, Lord Crescent

Vigilance, Trample, Desertwalk
If mana from a Desert source was used to cast
Vontrr, put two +1/+1 counters on it.
Whenever a Desert enters the battlefield, choose
one:
• Put a Vigilance counter on target creature
• Wurms and Snakes you control get +1/+1
and gain Desertwalk until end of turn