Strength of the Tajuru is a rare Instant card from Commander 2020 (C20), collector number 192. Current market price: $0.32, TCGplayer market prices via Scryfall.
Multikicker {1} (You may pay an additional {1} any number of times as you cast this spell.) Choose target creature, then choose another target creature for each time this spell was kicked. Put X +1/+1 counters on each of them.