Like Hearthstone, Legends also includes an in-game currency which can be used for multiple things
It is more explosive, giving +2/+2, but also does nothing on its own in situations where you won't or haven't cast a spell, while only 1 toughness makes it very vulnerable to things like Wrenn and Six and Lava Dart
Dreadnaught33: Lavabrink is too situational and not high-impact enough across the board
(Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) Doomsday Excruciator Rarity: Rare TYPE: Creature SUBTYPE: Demon CMC: 6 Mana cost: USD: $1.38 EUR: 0.65 TIX: 0.02 EDHREC RANK: 5743 (6/6) Flying When this creature enters, if it was cast, each player exiles all but the bottom six cards of their library face down
Price: $270,000 7
Beyond card advantage and mana advantage, I think most of the other staples are concentrated most in Black with stuff like Demonic Tutor and Reanimate, and Blue has countermagic like Mana Drain and also a bunch of great theft cards like Bribery