Biomancer's Familiar [Ravnica Allegiance Prerelease Promos] Shadowmoor You may cast it without

You may cast it without paying its mana cost if it's a spell with lesser converted mana cost

and that spell can't be countered

"I give my blood

" —*General Chanek Valteroth*

Set: Friday Night Magic 2010 Type: Enchantment Rare Cost: {2}{W} Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you

Biomancer's Familiar [Ravnica Allegiance Prerelease Promos] Shadowmoor You may cast it withoutSet: Ravnica Allegiance Prerelease Promos Type: Creature Mutant Rarity: Rare Cost: {G}{U} Activated abilities of creatures you control cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana. {T}: The next time target creature adapts this turn, it adapts as though it had no +1 +1 counters on it.