Illusionary Presence

Each upkeep, this 2/2 picks whatever land type the defender controls and walks straight past their board: conditional evasion against almost any deck, reset every turn to match the opposing manabase. That should make it a recurring threat. The problem is that both triggers fire at the same moment. The land-type choice and the cumulative upkeep tax both resolve at the beginning of your upkeep, so the you owe per age counter climbs by one every turn at exactly the point you want the body attacking. After a few swings, the evasion is real but you are pouring blue into age counters instead of casting anything. The escalating sacrifice clock is the price of an ability that would otherwise be too generic to leave unchecked: landwalk against any board is powerful precisely because it can match nearly any manabase, so the upkeep ratchet exists to ensure the creature never sits on the table for free. That is the through-line of Ice Age's whole cumulative upkeep cohort, a working ability metered out against a self-inflicted mana drain, and Illusionary Presence renders it about as plainly as the cycle gets: the evasion holds against almost any board, but the meter runs against you the entire time, and the only question is how many turns of you are willing to spend before the body sacrifices itself.