It's a great mana-sink and a useful option to kill off opposing creatures
For example, if the original creature spell had kicker and its kicker cost was paid, the copy will also be kicked
The Hunters Grand Abolisher (Dual-Bladed Hunter) - $11 Nonfoil / $13 Foil Archaeomancer (Hero of Hoarfrost Reach) - $0.30 Nonfoil / $3.80 Foil Grim Haruspex (Nargacuga Stalker) - $1.50 Nonfoil / $5.40 Foil Imperial Recruiter (Bherna Huntmaster) - $12 Nonfoil / $15 Foil Champion of Lambholt (Champion of Kotoko [sic]) - $2.45 Nonfoil / $13 Foil Total = $27.34 Nonfoil / $50.20 Foil What I would normally call a 'middling' Secret Lair value-wise, but here it's the best of the bunch
A good test to see if you're balancing them properly is that the cards should be able to fall off if you tilt your head until it is horizontal
A commander from the original Commander preconstructed decks back in 2011, Animar is still seeing use to this day in both casual and competitive Commander tables
The creature card you return, if any, isn't a target of Black Sun's Twilight