Selesnya

Lifegain is one of the the most popular themes in EDH. Multiple triggers to gain life and value received from the lifegain triggers are really fun to follow as a player. Often lifegain is combined with another theme, +1/+1 counters or creature tokens, as pure lifegain is often not powerful enough to win the game.

Landfall decks are causing landfall triggers with multiple lamp ramp spells. Often the triggers provide extra resources, +1/+1 counters or lifegain. Main wincons with landfall decks include: land creatures, +1/+1 creatures and massive value engines.

Elves are greens primary creature type since the beginning. Elf decks run a huge amount elf mana dorks and the are able to produce infinite and close-to-infinite amounts of mana, as the cards mana output increases with the amount of elves controlled. Elf tribals are combat focused.

White has many great support spells and permanents for +1/+1 counters theme. Counters theme is often combined with White-weenie or token strategy and turns the small creatures into a formidable force.

Mono white token decks aim to create a mass of small creature tokens and then with anthem effects or +1/+1 counter defeat the opponents in combat. White token decks are aggressive decks and aim to flood the battlefield soon rather than later due to the weaker card draw mono white has access to.

Decks running a high amount of enchantments are called enchantress decks. Enchantress decks focus on value creation and ramping through land auras, mana duplication and Enchantment cast + ETB triggers.