mtg explore card Valakut Exploration [Zendikar Rising] I will never run out of new oceans to explore or new sea Rules Text: Explore, 5 cards

Any ability that says "Whenever a creature you control attacks" won't see them enter

You can see here how do we test them to assure their authenticity

It's situational removal that can kill multiple pesky creatures and it's rather easy to pull off in practice because you get to untap the newly elected blockers and your opponent doesn't even need to attack you in order to pull this off

However, you're also getting creatures that will keep your hand topped up like Treeshaker Chimera and Solemn Simulacrum, and make sure that life counter is looking healthy as well (Thragtusk can land you 5 life when it enters and replaces itself with a 3/3 Beast creature token on death)

Those are good odds