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So it's totally metagame-dependent

Its also incredibly effective with mana dorks that produce mana based on their power like Gyre Sage and, like any card that distributes counters, this pairs nicely with Devoted Druid

Many cards can be placed into your Inkwell and converted into Ink

A great way to do this is to check the prices on TCG Player or PriceCharting

The rule numbers below match the rule explanations in the official video

Defense of the Heart #2537 Borderless My Little Pony: Friendship Is Magic Secret Lair Change Version Defense of the Heart Enchantment At the beginning of your upkeep, if an opponent controls three or more creatures, sacrifice this enchantment, search your library for up to two creature cards, put those cards onto the battlefield, then shuffle