Defender (This creature can't attack.)
First strike
Even the most conservative generals revised their tactics after the Battle of Sarinth, during which a handful of peasant-pikemen held off a trio of rampaging Craw Wurms.
During the brothers' childhood, Tocasia took them to explore the sacred cave of Koilos. There, in the Hall of Tagsin, Mishra discovered the mysterious weakstone.
Flying (This creature can't be blocked except by creatures with flying or reach.)
First strike (This creature deals combat damage before creatures without first strike.)
At the beginning of your upkeep, you may sacrifice an artifact. If you don't, tap Yawgmoth Demon and it deals 2 damage to you.
After Kroog was destroyed while most of its defenders were at his side, Urza vowed that none of his allies would ever need to fear for their own defense again, even while laying siege to a city far from their homes.