The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, reach, trample, and vigilance
In the right dice-loaded bird tribal deck, Chicken la King might even be decent in Commander
If the creature these Auras are enchanting dies, the Aura will also be destroyed and go to the graveyard
Once you get these artifacts on the battlefield, they start to boost all your next moves, from creating huge tokens and doubling power to ramping and giving counters
Counter strategies like this are primed for doublers, and big tramplers like Loyal Guardian are always welcome in aggressive decks
Aetherflux Reservoir Aetherflux Reservoir is one of the most flexible lifegain cards in MTG, since you can fit it in any deck and it works with all types of spells