Emiel the Blessed + Overlord of the Hauntwoods + Nyxbloom Ancient + Spelunking
Emiel the Blessed
Overlord of the Hauntwoods
Nyxbloom Ancient
Spelunking
Infinite creature LTBInfinite creature ETBInfinite landfall triggersInfinite tapped Mountain tokensInfinite tapped Island tokensInfinite tapped Forest tokensInfinite tapped copies of a specific landInfinite tapped Plains tokensInfinite tapped Swamp tokensInfinite card drawInfinite draw triggers
How it works
Activate Emiel the Blessed by paying 3, blinking Overlord of the Hauntwoods.
When Overlord of the Hauntwoods enters the battlefield, it triggers, creating an untapped Everywhere land token due to Spelunking.
Activate the Everywhere token by tapping it, adding 3.
Repeat.
This fascinating loop turns Emiel the Blessed into an engine that repeatedly blinks Overlord of the Hauntwoods, letting its entrance trigger flood the board with Everywhere land tokens. Because Spelunking ensures these new lands enter the battlefield untapped rather than tapped, you can immediately tap them for mana, feeding the loop with the help of Nyxbloom Ancient tripling your mana production to easily cover Emiel's activation cost while generating infinite mana and triggers.