Regardless of this choice, it will be only a Mountain and not a Swamp
Add in a few copies of [c]Soul Warden[/c] and [c]Souls Attendant[/c], and youre looking at a powerful deck with an interesting theme
Realm Seekers Rarity: Rare TYPE: Creature SUBTYPE: Elf Scout CMC: 6 Mana cost: USD: $0.00 EUR: 0.00 TIX: 0.02 EDHREC RANK: 9228 This creature enters with X +1/+1 counters on it, where X is the total number of cards in all players' hands
Artifacts in general also play a huge role in Commander, with plenty of decks relying heavily on artifacts and artifact subtypes, so this deck does a great job of teaching a new player how the various artifact types work and how to make the most of them
Whenever Fervent Champion attacks, another target attacking Knight you control gets +1/+0 until end of turn
The thing is, the turn still ends with these effects, so something that simply lasts until the end of turn will still act appropriately