Devoted Druid + Leyline of Abundance + Loading Zone + Solid Ground

Devoted Druid

Leyline of Abundance

Loading Zone

Solid Ground

How it works

1. Activate Leyline of Abundance by paying 6, putting four +1/+1 counters on each creature you control due to Loading Zone and Solid Ground.
2. Activate Devoted Druid's first ability by tapping it, adding .
3. Leyline of Abundance triggers, adding .
4. Activate Devoted Druid's second ability by putting a -1/-1 counter on it, untapping Devoted Druid.
5. Repeat from step 2 three additional times.
6. Repeat from step 1.

This clever loop turns Devoted Druid into an explosive mana generator by constantly offsetting its self-inflicted -1/-1 counters with a massive influx of +1/+1 counters. By cycling the druid's tap and untap abilities, you generate green mana, which is supercharged by Leyline of Abundance's triggered ability to ensure you rapidly accrue the resources needed to feed the engine. The true brilliance of the loop lies in Solid Ground and Loading Zone, whose combined replacement effects turn a single activation of Leyline of Abundance's expensive mana sink into a torrent of growth that permanently cancels out the druid's drawbacks and leaves your entire board infinitely large.