Swing by the Draftsim blog to read highlights about the best cards in different categories and formats
In Magic there are lots of cards and lots of decks and therefore many things you need to be able to handle, the larger the format the more this is the case
The more controlling Angels like Linvala and Angel of Jubilation see a lot of play in EDH, offering sweet hatebears that stop many tactics, from mana dorks to combos
It can be expensive, but its often worthwhile, especially with creatures like Esper Sentinel
He is typically better in the agro decks than Hooligan, more so than a single power upgrade might suggest as it transforms it into a vastly more relevant thing to have on the board
Lucario (Fighting / Mythical Island) Lucario's strength lies in a passive ability that improves all your team's Fighting attacks by +20 damage