Glacial Chasm [From the Vault: Realms] Friday Night Magic 2004 if this came under your

if this came under your control since the beginning of your last upkeep

"After his death

Whenever a creature with power 4 or greater enters the battlefield under your control

Set: Lorwyn Type: Tribal Enchantment — Merfolk Rarity: Uncommon Cost: {1}{U} At the beginning of your end step

Titania is ascendant

Glacial Chasm [From the Vault: Realms] Friday Night Magic 2004 if this came under yourSet: From the Vault: Realms Type: Land Rarity: Mythic Cumulative upkeepPay 2 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) When Glacial Chasm enters the battlefield, sacrifice a land. Creatures you control can't attack. Prevent all damage that would be dealt to you.