Invigorating Surge

Instant - (uncommon)

Put a +1/+1 counter on target creature you control, then double the number of +1/+1 counters on that creature.

For hydras, most problems can be solved with the addition of a few extra heads.

Price

tcgplayer 0.22

cardmarket 0.19

cardkingdom 0.69

cardsphere 0.36

manapool 0.23