Myr Welder + Crab Umbra + Five Hundred Year Diary

Myr Welder

Crab Umbra

Five Hundred Year Diary

How it works

1. Activate Myr Welder using Five Hundred Year Diary's ability by tapping it, adding at least
2. Activate Crab Umbra by paying 2, untapping Myr Welder.
3. Repeat.

This ingenious loop turns Myr Welder into a relentless engine by leveraging the activated abilities of other artifacts once they are exiled beneath it. By imprinting Five Hundred Year Diary, the welder gains the ability to tap for massive blue mana based on your Clues, while Crab Umbra provides the crucial untap mechanism needed to reset the loop. Because Crab Umbra's ability costs only three mana to activate, you can repeatedly untap Myr Welder while generating a net surplus of blue mana, easily fueling an infinite mana combo.