Martyr's Soul

Creature — Spirit Soldier • Mana cost: {2}{W} • Modern Horizons • Common

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
When this creature enters, if you control no tapped lands, put two +1/+1 counters on it.

Illustrated by Mila Pesic.