The spell has the characteristics of the main spell, plus the rules text of each of the spliced cards. This is a text-changing effect (see rule 612, “Text-Changing Effects”). The spell doesn’t gain any other characteristics (name, mana cost, color, supertypes, card types, subtypes, etc.) of the spliced cards. Text gained by the spell that refers to a card by name refers to the spell on the stack, not the card from which the text was copied.
July 12, 2019 · Core Set 2020
Generic mana in the sacrificed permanent’s mana cost reduces generic mana in the spell’s total cost. Colored and colorless mana in the sacrificed permanent’s mana cost reduces mana of the same type in spell’s total cost, and any excess reduces that much generic mana in spell’s total cost. (See rule 118.7.)
June 14, 2019 · Modern Horizons
Generic mana in the sacrificed permanent’s mana cost reduces generic mana in the spell’s total cost. Colored and colorless mana in the sacrificed permanent’s mana cost reduces mana of the same type in spell’s total cost, and any excess reduces that much generic mana in spell’s total cost. (See rule 117.7.)
May 3, 2019 · War of the Spark
Generic mana in the sacrificed permanent’s mana cost reduces generic mana in the spell’s total cost. Colored and colorless mana in the sacrificed permanent’s mana cost reduces mana of the same type in spell’s total cost, and any excess reduces that much generic mana in spell’s total cost.
January 25, 2019 · Ravnica Allegiance
Generic mana in the sacrificed permanent's mana cost reduces generic mana in the spell's total cost. Colored and colorless mana in the sacrificed permanent's mana cost reduces mana of the same type in spell's total cost, and any excess reduces that much generic mana in spell's total cost.
July 22, 2016 · Eldritch Moon
Generic mana in the sacrificed permanent’s mana cost reduces generic mana in the spell’s total cost. Colored and colorless mana in the sacrificed permanent’s mana cost reduces mana of the same type in spell’s total cost, and any excess reduces that much generic mana in spell’s total cost.
February 1, 2014 · Born of the Gods
Generic mana in the sacrificed permanent’s mana cost reduces generic mana in the total cost to cast the card with offering. Colored mana in the sacrificed permanent’s mana cost reduces mana of the same color in the total cost to cast the card with offering. Colored mana in the sacrificed permanent’s mana cost that doesn’t match colored mana in the colored mana cost of the card with offering, or is in excess of the card’s colored mana cost, reduces that much generic mana in the total cost.
July 13, 2013 · Magic 2014
Generic mana in the sacrificed permanent's mana cost reduces generic mana in the total cost to cast the card with offering. Colored mana in the sacrificed permanent's mana cost reduces mana of the same color in the total cost to cast the card with offering. Colored mana in the sacrificed permanent's mana cost that doesn't match colored mana in the colored mana cost of the card with offering, or is in excess of the card's colored mana cost, reduces that much generic mana in the total cost.
September 30, 2011 · Innistrad
A ninjutsu ability may be activated only while a creature on the battlefield is unblocked (see rule 509.1h). The creature with ninjutsu is put onto the battlefield unblocked. It will be attacking the same player or planeswalker as the creature that was returned to its owner's hand.
June 17, 2011 · Commander 2011
A ninjutsu ability may be activated only while a creature on the battlefield is unblocked