The Summoner of The Blood Red

The Summoner of The Blood Red's power and toughness are equal to the number of cards called
Red Emblem on the battlefield.
All creatures you control that are red or have {r} in their mana cost have "{1}{r}{r}{r}, {t}: This creature gets X +1/+1 counters where X is
the number of +1/+1 counters already on the battlefield.
"The Blood Red will last forever!"
— Sadaar, Red Knight