Plus, when they finally play their third land you can play another Stone Rain just to frustrate them even more
Cards that untap mana sources also work well with instants because they let you spend mana on your turn and your opponents'
This is a new token being added as part of the Marvel Super Heroes set, and it can be tapped to add one colorless mana, usable only to cast artifacts
For six mana, you can exile another Creature and put a +1/+1 counter on it
An extra turn might not seem that amazing considering you won't have much mana left the turn you cast this, but the real power is that it gives you the opportunity for all your other creatures and planeswalkers to provide extra value
Here are my top 10 picks from the preconstructed decks: Protection Magic Cheap, instant-speed insurance for up to three of your best creatures