Cheapest priced copy (Ixalan): $0.35 at Card Kingdom, near mint, their price list as of .
Emergent Growth 
Sorcery · Uncommon · Ixalan · #188
Target creature gets +5/+5 until end of turn and must be blocked this turn if able.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ixalan | 188 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 29 September 2017If the target creature attacks, the defending player must assign at least one blocker to it during the declare blockers step if that player controls any creatures that could block it. Other creatures may also block it, block other creatures, or not block at all.