When you're dealt combat damage, sacrifice Swarmborn Giant.
: Monstrosity 2 (If this creature isn't monstrous, put two +1/+1 counter(s) on it and it becomes monstrous.).
As long as Swarmborn Giant is monstrous, it has reach (This creature can block creatures with flying.).
The information presented on this site about Magic: The Gathering, both literal and graphical, is copyrighted by Wizards of the Coast.
This website is not produced, endorsed, supported, or affiliated with Wizards of the Coast.