Sad Steppe Sand Dune

Sad Steppe Sand Dune enters the battlefield tapped.
{t}: Add {r} to your mana pool.
Whenever a Lizard creature enters the battlefield under your control, Sad Steppe Sand Dune deals 1 damage to target opponent.
Hot sun, dry sand, imbearable heat. Feels like home.
- Ozzie, the Dire Sunset