Shared Animosity

Enchantment, 2R (3)
Whenever a creature you control attacks, it gets +1/+0 until end of turn for each other attacking creature that shares a creature type with it.
"It is the nature of souls that they burn more brightly together than apart." —Vessifrus, flamekin demagogue
Illus. Chuck Lukacs

Crystal Keep Rulings Summaries

• Each creature is counted once even if it shares more than one creature type. [Morningtide FAQ 2008/01/15]
• In a Two-Headed Giant game, only creatures you control trigger the ability and get the bonus, but your teammate's attacking creatures are included in the calculation of those bonuses. [Morningtide FAQ 2008/01/15]

Format Legality	Legal in Vintage, Legacy, Extended, Standard
Printings (1/10)	Morningtide (Rare)