Rune-Sealed Wall: Big-butts decks like Arcades always love something with 5 or more toughness
Tuskguard Captain | Illustration by Aaron Miller Outlast is a keyword ability that requires the creature with outlast to tap, which adds a +1/+1 counter to it
This makes it a rare example of a card that helps a huge amount in the early game while still scaling well into the late game
Plusses all around
A 5-mana 7/3 with Trample is probably something youd play more often than not, especially in a set with lots of Pack Tactics, since he can trigger it all on his own, but what really makes Zalto powerful is the fact that in most cases your opponent will have to at least give you the value of Venturing into the Dungeon once
For example, if Bottomless Pool // Locker Room is on the battlefield with both doors unlocked, its names are Bottomless Pool and Locker Room, its mana value is 6, it's a Room Enchantment, and it has the abilities in each door's text box