
If a creature spell you cast this turn was countered by a spell or ability an opponent controlled, you may pay {0} rather than pay this spell's mana cost.
Look at the top seven cards of your library. You may put a creature card from among them onto the battlefield. Put the rest on the bottom of your library in any order.
Summoning Trap has 2 printings, first in Zendikar (2009). EDHREC ranks it #18,147 among Commander cards. It appears most in Hua Tuo, Honored Physician decks (27 on EDHREC). It has 4 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.