This is a bit tougher to break as its 4 mana per activation
Kind of like a drop rate, except instead of killing a monster in a video game and picking up loot, you open a digital pack of cards in a simulated card game
The dash mode helps to dodge sorcery-speed removal, so Ragavan is hard to answer cleanly
Having Arcanine ex might feel like overkill here and perhaps it is but it requires only three Energy to use Inferno Rush, which deals a whopping 120 damage and can be vital in getting off some early hits and doing damage to your opponents, as explained by YouTuber TLSG Pokemon in his breakdown of the deck
Though you might also get one via Wonder Pick
Speculators were aggressively buying up Proliferate engines in anticipation of the new -1/-1 counter mechanic, but the market is now correcting as the actual Lorwyn set has its own internal synergies