For example, if I like making a deck that works by making my opponent discard cards so that he doesnt have anything to use against me, I could make a deck that contains a lot of spells that force him to discard cards. If I want to take that a step further, I could play a card that says whenever a player discards a card, this card does 2 damage to him to make my deck even more efficient
In some cases, it can even be more powerful than the Moxes
All in all, this is one of the best red soldiers in Magic if your deck has any sort of goblin typal synergies going on, Legion Warboss is definitely a card you want to look into
And if you can find other ways of putting extra counters on Sharktocrab, then the tapping ability will just keep winning you games
You can obtain the Barbaracle (2-Diamonds rarity) card by opening Wisdom of Sea and Sky: Lugia from Wisdom of Sea and Sky set
Pair with Bristly Bill or Salvation Swan and you've got yourself beaucoup value my friend