I never had problems finding the flowers and roses from using bonemeal on grass. It only took me like 1 stack of bonemeal in my current world. The high golem is from Tinkers' Steelworks. You can craft it with 2 chiseled seared bricks and 1 high oven controller for the head. Build it in the world like you would a snow golem. It acts exactly like a snow golem, except it actually does damage to enemies, but only 1 hp per attack. Shoots scorched bricks instead of snowballs. Also has high knockback on targets. But it's weak and dies easily like snow golems do.