The Locus of Zendikar

Landfall- Whenever a land enters the battlefield,
choose X, where X is equal to the number of creatures in your party:
• Gain 3 life.
• Draw two cards, then discard a card.
• Destroy target tapped creature.
{bull} Deal 3 damage to any target.
{bull} Put a +1/+1 counter on target creature. Its
owner can search his library for a land card and
put it into his hand. Shuffle all libraries.