Once per turn, when creatures with counters on them deal combat damage to a player, the player who controls Tidus can draw a card and proliferate (i.e., add an extra counter to creatures and permanents that already have them)
Iconic cards are the rarest of the rare
These are alternate versions of existing cards featuring full card alternate artwork which continues to be visible behind the text
Free, pinpoint interaction works well in many scenarios, plus it puts a creature in the yard for nothing
For instance: Creatures (25) 2 Llanowar Elves 2 Priest of Titania 2 Wirewood Symbiote 1 Quirion Ranger 1 Fyndhorn Elves 1 Viridian Shaman 3 Birchlore Rangers 1 Mirror Entity 4 Heritage Druid 4 Nettle Sentinel 1 Regal Force 3 Elvish Visionary Lands (16) Spells (11) In case you were wondering, yes, Ancestral Recall, Time Walk, and Timetwister had a very powerful dimension to Elves, and a playset of Skullclamps is no joke, either
Yes it's quite expensive but not unreasonably so if it lets you win the game