The life gain your opponent receives rarely matters compared to permanently removing their biggest threat
Like most Pokmon cards, the value of Darkrai depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Obsidian Flames)
Sidequest: Catch a Fish / Cooking Campsite Rating: 4/10 Firstly, Sidequest: Catch a Fish is an enchantment that does nothing right away, so thats not great
Watermark: Jeskai Illustrated by Chris Rahn Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Creatures with trample can still give you difficulty which is why casting it as a six-mana 5/4 can help soak up a little bit of damage
In Commander, you'll be able to make good use of Final Showdown, paying six to destroy all creatures, one more when there's something important you want to protect, and one more when you want to get rid of some pesky indestructible stuff too