Your ace card, Hierophant of Prophecy can be Xyz Summoned with 2 Level 7 Spellcaster-Type monsters, but depending on the situation, you can call forth Synchro Monsters and Link Monsters
Making the rounds on Arena are many similar White Weenie decks that run a combination lifelink cards such as: [c]Shadowspear[/c] [c]Lurrus of the Dream Den[/c] [c]Alseid of Lifes Bounty[/c] [c]Heliod, the Sun Crowned[/c] Edgar Markov Vampire Tribal Commander In Commander, arguably the most meta lifelink deck is Edgar Markov Vampire Tribal
Of the two avatar characters you're offered at the beginning, the one you don't choose becomes your Operator, a fellow Agent who phones you up across the timelines to give you mission briefings, chat over what's going on, and consistently remind you that back in the year you came from things are not so good
Except for Neutral, they are all level 0 and have the common feature of boosting two abilities