Outside of spells with X in the cost, this saves a spell you cast from counter magic or other bad things, and then you can cast it next turn for FREE because it was plotted
As such, it makes perfect sense for MTG to have plenty of food-themed cards, to the point that Wizards of the Coast created an entire mechanic based on food called Food Tokens, which are artifacts that can be tapped and sacrificed, alongside a cost of 2 generic mana, to gain 3 life
You can only pull an Enchanted from the foil slot, and these are by far the hardest rarity to get
If Glen is in play against a control deck you have incredible control over the course of the game
Slash of Light in popular Magic: The Gathering formats Flash of Lights effectiveness varies with each popular Magic format
The latter is true of Hour of Promise, which gives you a few blockers and ramps into any lands you need, not just basics