Legion Conquistador [Ixalan] Commander 2017 you lose 1 life unless

you lose 1 life unless you pay {1}{W}

Set: Scars of Mirrodin Type: Creature — Ooze Rarity: Rare Cost: {2}{B}{B} As long as Necrotic Ooze is on the battlefield

but when to stop

Set: Urza's Saga Type: Enchantment Rarity: Rare Cost: {4}{W} When an opponent casts a creature spell

Set: Duels of the Planeswalkers Type: Sorcery Rarity: Rare Cost: {X}{U}{U} Draw X cards

Legion Conquistador [Ixalan] Commander 2017 you lose 1 life unlessSet: Ixalan Type: Creature Vampire Soldier Rarity: Common Cost: {2}{W} When Legion Conquistador enters the battlefield, you may search your library for any number of cards named Legion Conquistador, reveal them, put them into your hand, then shuffle. The Legion of Dusk sailed from Torrezon in search of glory, riches, and the Immortal Sun.