Dihada enabling lifelink and indestructible until end of turn is likely also going to have other upgrade guides push you to use these mechanics way morebe that by increasing the number of creature removal / board wipes or adding cards that are going to heavily impact life totals, like Heartless Hidetsugu or Aetherflux Reservoir
It cannot be countered and cannot be targeted on your turn, and your foes cannot cast stuff on your turn at all
Tax-like effects that require payments other than mana, like the effect of the first ability of Sivitri, Dragon Master, aren't taxes for the purposes of Tax Taker's ability
Freeze in Place: In the right deck, this either does exactly enough or can be proliferated
5 - Archmage of Runes At number 5, we have another Blue card, the Archmage of Runes , yet another discounter for a Spellslinger deck
Preventing players from casting spells from the graveyard isnt unique, but not many effects stop them from casting spells from exile