Thoughtlace [Alpha Edition] Arena League 2000 Schemes can't be set in

Schemes can't be set in motion that turn

Set: Arabian Nights Type: Sorcery Rarity: Uncommon Cost: {4}{G}{G} Destroy target permanent

Set: Ixalan Treasure Chest Type: Legendary Enchantment // Legendary Land Rarity: Rare Cost: {1}{U} At the beginning of your upkeep

but not for a way to control it

Set: Eventide Type: Instant Rarity: Uncommon Cost: {1}{W/B} Prevent all combat damage that would be dealt this turn if {W} was spent to cast this spell

Thoughtlace [Alpha Edition] Arena League 2000 Schemes can't be set inSet: Alpha Edition Type: Instant Rarity: Rare Cost: {U} Target spell or permanent becomes blue. (Mana symbols on that permanent remain unchanged.)