Blood Dragon
1.5M damage at the end. Only took me about 50 attempts to get this build. Wanted to do a dragon build with no minions or basically just an established OP build with added dragon. Ogham gives prayer on init attack. Crystal form triggers on prayer but so does dragon form, dragon form remains and adds crystal form stacks. Priest gives increasing gains on dragon/crystal stacks because when it switches back and forth the +50% applies to the switch. Needed speed and healing first, then dragon form starts to kick in for OP armor/block/damage.