The Monk archetype fits perfectly within Tifa's fighting style for MTG , letting her unleash a flurry of attacks with a second combat phase when fighting alongside a creature with 7 or more power
The recognizable traits of every Sultai Delve deck will be making use of the graveyard, removal spells, card advantage, and good ways to block non-flying creatures (stall the board)
Vizier of Remedies and Melira, Sylvok Outcast are used as ways to combo with -1/-1 counter placement, whether with Devoted Druid or infinite sacrifice loops of persist creatures
The player must answer truthfully and abide by that answer until the end of the turn
There are other benefits to these spells that make them slightly better than a 1-for-1 exchange, but they do not put you up on cards or any sort of permanents in play, and are therefore not card advantage