Well, the first i think is slow and expensive for that it can offers (
viridian claw is better for my own) and the second i guess isn't good for this deck because usually i use 1-3 instant for game so the
runechanter's pike gives only +2 or +3 (
viridian claw remain better than that for me). However, I prefer focus on more powerful equipments instead that
viridian claw (like
basilisk collar, lighting groves, etc) because my creatures for the attack are already strong (
etched champion and porcelain soldier) without first strike. I hope to answer correctly and completely!