Have effects on sacrifice

[bil-bas]

Brought up by Maverick.

• Place blockers after making a sacrifice. May block either both players or just the other player. Could be a wall or a shape you mark by running (like a tron-bike). Idea would be to block off areas of the map or trap the other guy in with a monster.
• Speed up self or slow down other.
• Turn self into another creature (faster, stronger, tougher?).
• Turn other into a slow or entirely uncontrollable creature (chicken?).
• Heal.