Imagine equipping the Sword cycle for free
Delirium As long as there are four or more card types among cards in your graveyard, Insects and Spiders you control get +1/+1 and have deathtouch
You'll want to run tokens of both colors to make that work, just like conspire enabler in Gruul Wort, the Raidmother from Shadowmoor Block
Log in RULINGS 2016-06-08 Mesa Enchantresss last ability will resolve before the spell that caused it to trigger
The floor on these in a deck triggering multiple upkeeps is still very high, especially when youre playing one, become the monarch, and then get your combat damage trigger from Obeka
Training Grounds has similarly bottomed out, and similarly is likely to stay lower unless we see something crazy printed that wants it for a Commander deck