Lore Seeker

Whenever another creature enters the battlefield, you gain 1 life.

When Tidehollow Sculler enters the battlefield, target opponent reveals their hand and you choose a nonland card from it. Exile that card.
When Tidehollow Sculler leaves the battlefield, return the exiled card to its owner's hand.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle their library.

Target player reveals their hand. You choose a nonland card from it with converted mana cost 3 or less. That player discards that card.

At the beginning of your upkeep or whenever you cast a white spell, put a charge counter on Shrine of Loyal Legions.
{3}, {T}, Sacrifice Shrine of Loyal Legions: Create a 1/1 colorless Myr artifact creature token for each charge counter on Shrine of Loyal Legions.

White creatures you control get +1/+1.

Creature tokens you control get +1/+1 and have vigilance.

Create two 1/1 white Soldier creature tokens.

Until end of turn, creatures you control get +1/+1 and creatures your opponents control get -1/-1.

Equipped creature gets +2/+2 and has protection from black and from green.
Whenever equipped creature deals combat damage to a player, that player discards a card and you untap all lands you control.
Equip {2}

Create two 1/1 white Spirit creature tokens with flying.
Flashback {1}{B}

Create three 1/1 white Spirit creature tokens with flying.

[+1]: Create a 1/1 white Soldier creature token.
[+1]: Target creature gets +3/+3 and gains flying until end of turn.
[–8]: You get an emblem with "Artifacts, creatures, enchantments, and lands you control have indestructible."

{T}: Add {C}.
{T}: Add {W} or {B}. Caves of Koilos deals 1 damage to you.

Whenever City of Brass becomes tapped, it deals 1 damage to you.
{T}: Add one mana of any color.

Isolated Chapel enters the battlefield tapped unless you control a Plains or a Swamp.
{T}: Add {W} or {B}.

{T}: Add {C}.
{2}{W}{B}, {T}: Creatures you control gain deathtouch and lifelink until end of turn.

Hideaway
{T}: Add {W}.
{W}, {T}: You may play the exiled card without paying its mana cost if you attacked with three or more creatures this turn.

{T}: Target player exiles a card from their graveyard.
{1}, Exile Relic of Progenitus: Exile all cards from all graveyards. Draw a card.

Protection from red
Sacrifice Burrenton Forge-Tender: Prevent all damage a red source of your choice would deal this turn.

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {1}."

Target creature gets -5/-5 until end of turn.